Kanto Carp Streamer Festivals 2025: A Spring Guide for International Visitors to Japan

What Is Koinobori? Discover Japan’s Colorful Carp Streamers for Children’s Day

On May 5th each year, Japan celebrates Children’s Day, a national holiday dedicated to the healthy growth and happiness of children.

As part of this long-standing tradition, families and communities across the country display Koinobori—colorful carp-shaped streamers—wishing for children’s strength and success in life.

The Meaning Behind “Children’s Day” and “Carp Streamers” in Japan

Originally known as Tango no Sekku (Boys’ Festival), May 5th was traditionally a day to pray for the health and future success of boys. In Samurai households, this was celebrated by displaying Samurai helmets (kabuto) and banners, symbolizing strength and bravery.

Over time, this tradition spread to the general public. The image of the carp swimming upstream—strong, determined, and resilient—became a beloved symbol of children’s growth and aspirations.

In 1948, Tango no Sekku was officially designated as Children’s Day, a national holiday that not only celebrates the happiness and development of all children, but also honors the gratitude felt toward mothers.

Why Carp Became the Symbol of Strength and Success

Have you ever heard the famous legend of the “Carp Climbing the Waterfall”?

According to this tale, a single carp once swam upstream against the powerful current of a waterfall known as the “Dragon Gate.” After finally reaching the top, the carp transformed into a mighty dragon and soared into the sky.

This story has long symbolized strength, determination, and the power to overcome adversity—qualities that the carp has come to represent.

Inspired by this legend, Japanese families began flying carp streamers (Koinobori) to express their hope that their children will grow up strong and resilient, no matter what challenges they may face.

(Reference: HoiClue, All About)

Types and Sizes of Koinobori: What They Mean for Families in Japan

Carp streamers (Koinobori) gently swaying in the blue sky are more than just a beautiful seasonal sight—they are vibrant “flags of hope,” each color, shape, and size rich with meaning.

In the following sections, let’s take a closer look at the heartfelt messages behind these streamers, reflecting both family bonds and a deep connection to nature.

The Colors of Carp Streamers and Their Family Representations

In many Japanese households, a typical set of Koinobori includes three streamers in black, red, and blue. Each color represents a different family member, making the display not only decorative but also deeply symbolic.

• Black carp (magoi): Symbolizes the father—the strong foundation of the family.
• Red carp (higoi): Represents the mother—the giver of life and warmth.
• Blue carp: Stands for the children—youth, vitality, and the promise of growth.

In recent years, it has become common to see Koinobori in additional colors like green, pink, and orange. Many families now personalize their displays to reflect the number of children, making the streamers a cherished symbol of family identity and unity.

What Are the Streamer and Arrow Wheel? Japanese Charms for Protection and Growth

At the very top of a Koinobori display, you’ll often notice a colorful streamer fluttering in the wind, known as a “Fukinagashi,” along with a spinning ornament called a “Yaguruma.” These are not just decorative elements—they serve as meaningful charms meant to protect children and support their healthy development.

The Fukinagashi is made up of five colors—blue, red, yellow, white, and black—each derived from the ancient Chinese philosophy of the Five Elements (wood, fire, earth, metal, and water). Together, they symbolize a harmonious relationship with nature and a wish for the child’s well-being and balanced growth.

The Yaguruma, which spins in the wind and creates a gentle clattering sound, has long been believed to ward off evil spirits. Acting as a spiritual protector for the entire Koinobori set, it has been passed down through generations as an important element of this cherished tradition.

Even the Size Order Has Meaning: Discover the Symbolism Behind Koinobori Displays

Even the size and arrangement of the Koinobori hold symbolic meaning.

Traditionally, the largest carp represents the father, followed by a slightly smaller one for the mother, and then smaller carps for the children. This order reflects the idea of a growing family and the importance of mutual support and care within the household.

In recent years, more compact versions of Koinobori—designed for apartment balconies or indoor decoration—have become popular, allowing people to enjoy the tradition in a way that fits their modern lifestyle. Beyond their visual beauty, Koinobori are a heartfelt expression of Japanese values, representing gratitude for nature and the strength of family bonds.

(Reference: Masumura Doll Store and Dolls of Azuma Tamagawa )

Top 10 Koinobori Festivals in the Kanto Region for International Visitors

Celebrate the beauty of Japanese spring with Koinobori—colorful carp streamers that once again take flight across the skies of Kanto in 2025!

From iconic landmarks in central Tokyo to scenic local spots surrounded by nature, we’ve carefully selected festivals that offer stunning photo opportunities, convenient access, and authentic cultural experiences. Whether you’re looking to make a quick stop during your city sightseeing or planning a charming day trip out of town, these Koinobori festivals promise to add something truly special to your Japan journey.

Tokyo Skytree Town Koinobori Festival 2025 (Sumida, Tokyo / April 11–May 6)

At the foot of Tokyo’s modern landmark, the Tokyo Skytree, nearly 1,000 vibrant Koinobori soar against the backdrop of the city skyline. During the day, they flutter gracefully in the spring breeze, while at night, they’re illuminated to create a magical fusion of seasonal tradition and futuristic ambiance—a truly unique way to experience spring in Japan. Don’t miss the breathtaking panoramic views from the observation deck above.

A special collaboration with Sumida Aquarium brings an extra touch of whimsy to the event: look out for rare Koinobori inspired by spotted garden eels, banded garden eels, and the ever-popular Chin-anago (Japanese garden eel)!

Koinobori GALLERY 2025 (Minato, Tokyo / April 25–May 11)

Enjoy a unique blend of tradition and contemporary art at this open-air exhibition in Roppongi Hills. The garden space is brought to life with 101 artist-designed Koinobori, featuring imaginative creations by both Japanese and international artists. It’s a popular spot that captures the spirit of “Tradition Meets Modernity” in a fresh and vibrant way.

This event is especially recommended for art lovers visiting Japan—expect a photogenic setting that will inspire your camera as much as your curiosity.

Tokyo Tower’s 333 Carp Streamers (Minato, Tokyo / March 25–May 6)

Few sights capture the essence of Tokyo quite like the colorful Koinobori soaring beside the iconic Tokyo Tower. In honor of its 333-meter height, the display features exactly 333 carp streamers fluttering in the sky. Keep an eye out for the standout “Sanmanobori”—a 6-meter-long sardine-shaped streamer that adds a playful twist to the scene.

Anime fans won’t want to miss the special Golden Kamuy collaboration from April 26 (Sat) to May 6 (Tue, national holiday). Limited-edition Koinobori featuring characters from the beloved TV series will be on display, creating a memorable fusion of pop culture and tradition.

Conveniently located and easy to visit while sightseeing, this spot offers the perfect combination of Japanese seasonal culture and modern urban charm.

YAESU BIG HOLIDAY 2025 (Chuo, Tokyo / April 26–May 6)

Stylish and superbly accessible, this unique Koinobori event takes place in the Yaesu district—directly connected to Tokyo Station. It’s the perfect stop for travelers looking to combine convenience with a touch of whimsy.

One of the event’s highlights is the BIG HOLIDAY Koinobori Tunnel (available from May 2 to May 6, weather permitting). Unlike traditional displays where Koinobori fly overhead, this installation invites you to walk through a massive 25-meter-long carp streamer. Stepping inside the vibrant tunnel offers a rare and delightful perspective—a chance to see the world from inside a Koinobori!

Please note: While the main event runs from April 26 to May 6, the BIG HOLIDAY Koinobori Tunnel is only available from May 2 to May 6 and may be canceled in the event of severe weather.

Suzukawa Koinobori Festival (Hiratsuka, Kanagawa / May 4–5)

If you’re looking to escape the crowds and enjoy a slower, more authentic side of spring in Japan, the Hiratsuka Koinobori Festival offers just that. Held along a serene riverside setting, this local event features colorful Koinobori gently swaying in the breeze—a scene that beautifully captures the quiet charm of Japan’s countryside.

This heartwarming tradition began as part of a community-led environmental initiative. Local residents started flying donated Koinobori—carp streamers that were no longer in use—as a way to promote sustainability and celebrate the season.

In addition to the Koinobori display, you’ll find small food stalls and local festivities that create a nostalgic, laid-back atmosphere. It’s a perfect spot for a leisurely spring outing with cultural depth and a strong sense of community.

37th Morinosato Koinobori Festival (Atsugi, Kanagawa / May 3)

The picturesque combination of lush countryside and Koinobori creates a scene straight out of a fairytale at the Morinosato Koinobori Festival. Held in the tranquil setting of the Satoyama (village forest) area, this festival offers a rare opportunity to experience the beauty of rural Japan during spring.

Local children participate in traditional performances, providing a wonderful chance to immerse yourself in the local culture and community. One of the highlights of this festival is the unique sight of Koinobori swimming in front of a supermarket—something you won’t find at many other events.

For those who enjoy a peaceful outing, the park offers the perfect setting for a picnic under the colorful Koinobori. The fresh air, gentle breeze, and serene surroundings make it an ideal spot to relax and enjoy the spring atmosphere.

Note: The festival is being held on May 3, 2025, but the Koinobori will be on display from April 19 to May 6, until 3:00 PM.

Iki-iki Yamada Koinobori Festival (Katori, Chiba / April 25–May 7)

Watching colorful Koinobori dance across the sky above peaceful rice fields offers a refreshingly simple and heartfelt experience—one that’s hard to find in busy urban areas. If you’re looking to step off the beaten path and get a feel for everyday life in Japan, this countryside setting is the perfect place to unwind.

On May 3, the Koinobori Festival brings the area to life with stage performances and even hands-on water sports activities—making it a fun event for all ages. And for fans of Japanese pop culture, there’s a special treat in store: the unveiling of the Gundam Manhole Project takes place at 11:30 AM!

This event combines natural beauty, local charm, and a touch of modern Japan, offering something truly unique for spring travelers.

34th Kokubun River Carp Streamer Festival (Ichikawa, Chiba / April 29–May 5)

This breathtaking display of approximately 400 Koinobori stretched out over the Watarase River creates a picture-perfect scene you won’t want to miss. With plenty of open space for picnicking and a relaxed atmosphere, it’s an ideal destination for families—especially those traveling with children.

On May 4, a special ceremony takes place, complete with children’s activities and local food stalls, adding a festive touch to your riverside day out. It’s a wonderful opportunity to slow down, enjoy nature, and experience a slice of authentic Japanese culture in a warm, welcoming setting.

Yokoze Koinobori Festival (Yokoze, Saitama / April 12–May 6)

With the majestic Chichibu Mountains as a backdrop, this festival offers a striking contrast between nature and culture—perfect for capturing unforgettable photos. Located within easy reach of central Tokyo, it’s an excellent choice for a scenic day trip, especially for those who enjoy spring hiking.

Around 180 Koinobori, donated by local residents, flutter vibrantly in the mountain breeze. During the event period, a free shuttle bus runs from Yokoze Station, making access convenient for travelers. With relaxing hot springs nearby, this destination offers a wonderful blend of cultural discovery and rejuvenation—an ideal way to experience the charm of rural Japan.

Kazo Citizens Peace Festival & Giant Carp Streamer Flight (Kazo, Saitama / May 3)

Witness the breathtaking sight of a colossal Koinobori over 100 meters long soaring through the sky—an awe-inspiring experience that ranks among the largest of its kind in Japan. Held for one day only on May 3, 2025, this special event is perfect for travelers seeking something truly unforgettable.

Beyond the incredible display, the festival also features a lively flea market, a classic car showcase, and fun attractions for kids—making it a fantastic day out for the whole family. If you’re looking for a unique memory to take home from your Japan trip, this event is not to be missed.

Suggested Travel Plans for Visiting Koinobori Festivals in Japan

While admiring Koinobori from afar is a beautiful sight, turning it into a hands-on experience can make your Japan trip even more memorable. To help you dive deeper into Japan’s springtime culture, we’ve put together a selection of travel plans that incorporate Koinobori viewing with local experiences.

Whether you’re staying in Tokyo and have a free day, looking for a relaxing day trip, or hoping to create a custom itinerary, these ideas are designed to fit a variety of travel styles. Let the Koinobori be your guide to a meaningful adventure in Japan this May.

Combine Koinobori Viewing with Tokyo Sightseeing

Pressed for time but still want to enjoy the magic of Koinobori? You’re in luck—some of the best Koinobori displays are located right near Tokyo’s most iconic landmarks.

Consider visiting the Koinobori festivals held at Tokyo Skytree or Tokyo Tower. These vibrant celebrations are conveniently located near major sightseeing spots, making them perfect for travelers who want to make the most of their day without straying too far from the city center. It’s an easy and efficient way to add a touch of Japanese tradition to your Tokyo itinerary.

This plan allows you to enjoy both urban attractions and traditional Japanese culture in one day.

Day Trips from Tokyo: Explore Kanto’s Best Carp Streamer Spots

Looking to slow down and experience a more peaceful side of Japan? A day trip from Tokyo to see Koinobori in the countryside might be just what you need.

Leave the city in the morning and head to a nearby town where you can enjoy Koinobori floating in the fresh mountain air, have a picnic under the colorful streamers, and sample some local specialties. You’ll be back in Tokyo by evening—making it a great option for travelers who want a deeper cultural experience without straying too far from their itinerary.

Cultural Experiences Featuring Koinobori for International Visitors

Enjoying a picnic under the fluttering Koinobori is a lovely way to spend the day—but why not take it a step further and dive into Japanese culture at the same time?

Many spring festivals offer limited-time experiences that combine Koinobori displays with hands-on cultural activities. Whether it’s traditional crafts, tea ceremonies, or local performances, these special collaborations give you the chance to connect more deeply with Japan—something truly unique to this time of year.

Activity Idea 1: Make Your Own Carp Streamer

Looking for a unique souvenir and a truly memorable moment from your trip? Try your hand at making your very own Koinobori. These hands-on workshops offer a variety of creative options depending on the location—such as painting your own carp streamer, crafting one in glass or clay, and more.

It’s a rare opportunity to enjoy Japanese culture, traditional crafts, and artistic expression all in one place.

These “sightseeing + experience” programs are especially popular with families, couples, and solo travelers who want more than just a photo—they’re perfect for anyone looking to take home a deeper, more personal connection to Japan.

Activity Idea 2: Enjoy Seasonal Japanese Home Cooking with Koinobori Themes

Why not pair your Koinobori viewing with a truly heartwarming experience—enjoying seasonal Japanese home-style dishes that have been loved for generations?

This special opportunity lets you taste and feel the essence of Japanese spring all at once. It’s more than just a meal—it’s a chance to connect with Japan’s homegrown food culture and the warmth of the people behind it.

Perfect for those who want to step away from the hustle of the city and enjoy a slower, more intimate side of Japan. And if you enjoy a good drink, many experiences also offer food and Sake pairings for a delightful culinary match.

Activity Idea 3: Koinobori and Japanese Tea Ceremony Experience

Imagine enjoying a quiet moment of tea under the soaring Koinobori, surrounded by the serene beauty of Japanese culture and nature. This experience captures the essence of Japan’s seasonal charm in one perfect moment.

Why not take part in a traditional tea ceremony in a beautiful outdoor setting, perhaps in a Japanese garden or amidst the springtime landscape, where the Koinobori gently flutter in the breeze?

The tea ceremony is more than just drinking tea—it’s about appreciating hospitality, respect, and a deep reverence for nature, all core values of Japanese culture. As you savor sweets shaped like Koinobori, take your time to enjoy a cup of tea and immerse yourself in the beauty of Japan’s aesthetic traditions. This luxurious experience blends the grace of spring with the essence of Japanese “heart” (kokoro), offering you a peaceful and profound cultural experience.

Celebrate Spring in Japan: Discover the Meaning and Traditions of Children’s Day

Koinobori swimming under a clear blue sky is a quintessential sight of Japan’s spring. It’s not just a beautiful tradition—it’s a heartfelt expression of hope for children’s health and the happiness of families.

Although “Children’s Day” may seem like an event solely for kids, it holds much deeper meanings—representing Japan’s values, history, and respect for nature.

For international visitors, enjoying Koinobori is not only about “seeing” but also about engaging in hands-on cultural experiences, such as:

• Crafting Samurai helmets with Origami
• Tasting seasonal treats like Kashiwa-mochi
• Participating in local festivals and connecting with the community

These experiences offer a special chance to immerse yourself in everyday Japanese life.

For adults, encountering a new culture may provide a peaceful and enriching opportunity to reflect on their own roots. Take a moment to pause during your travels, and alongside the Koinobori soaring in the sky, let your heart be filled with the warmth of spring in Japan.

At MOTENAS JAPAN, we offer curated experiences combining Koinobori displays with immersive cultural activities. We can also arrange interpreters and assist with venue planning. For those seeking unique “Koinobori and Children’s Day Experiences” or looking to offer something special to international guests, please feel free to contact us!