Idols Meet Sibling Drama: 22/7 x The Shiunji Family Children Limited Edition Manga Launches in Bookstores

What happens when one of Japan’s most unique idol groups crosses paths with a quirky, heartfelt anime about a chaotic family of siblings?
Kumazawa Shoten’s latest collaboration brings together the rising TV anime The Shiunji Family Children and digital voice-acting idol group 22/7 for a limited bookstore campaign that’s full of character—literally.
With exclusive obi strip messages from each 22/7 member and in-store displays that celebrate both franchises, this event offers fans a rare chance to dive deeper into the worlds of their favorite manga and music idols—all in one place.

Anime Meets Idol: A Unique Bookstore Collaboration Begins

A new limited-time bookstore campaign has kicked off in Japan, uniting two of the country’s most beloved pop culture forces: anime and idols. Kumazawa Shoten, one of Japan’s largest bookstore chains, has teamed up with the ongoing anime The Shiunji Family Children and the digital voice-acting idol group 22/7 (Nanabun no Nijūni) to deliver a one-of-a-kind crossover experience. Fans visiting participating stores will not only be able to pick up volumes of the manga with special obi strips featuring handwritten messages from 22/7 members, but can also enjoy unique in-store displays and panel exhibits that bring the characters to life.

What Is “The Shiunji Family Children”?

The Shiunji Family Children (Japanese title: 紫雲寺家の子供たち) is an anime adaptation of the manga by Reiji Miyajima, currently airing on networks such as AT-X, Tokyo MX, BS11, and Kansai TV. The story follows Arata Shiunji, the only son in a large and eccentric family dominated by five beautiful sisters. Life is already chaotic enough—until Arata learns a shocking family secret that could change everything. Combining comedy, romance, and slice-of-life tension, the anime offers a fresh twist on the “family drama” genre with just the right amount of heartfelt moments and awkward sibling interactions.

Who Are 22/7? Exploring the Idol-Voice Actor Project

22/7, pronounced “Nanabun no Nijūni,” is a digital idol group developed through a collaboration between Sony Music and Aniplex, with creative guidance from Yasushi Akimoto. Each member voices a fictional anime character while also performing in real life—bridging the gap between 2D and 3D entertainment. Known for their distinct personalities, catchy songs, and character-driven storytelling, 22/7 continues to stand out in Japan’s crowded idol scene. Their involvement in this collaboration adds an extra layer of interactivity for fans, especially as they leave their personal messages on manga volumes tied to a family-themed anime.

Limited Obi Comments: 22/7 Members Add a Personal Touch

As part of this collaboration, each volume of The Shiunji Family Children manga (Volumes 1–6) will come with a special obi strip featuring a unique message from a 22/7 member. Here’s the lineup:

• Volume 1: Nagomi Saijō
• Volume 2: Sally Amaki
• Volume 3: Uta Kawase
• Volume 4: Satsuki Shiina
• Volume 5: Nao Aikawa
• Volume 6: Rino Mochizuki

These personal notes are more than just a bonus—they reflect each idol’s personality and perspective, offering fans a deeper emotional connection to both the group and the story of the Shiunji family.

Where to Find Special Displays and Panels

In addition to the collectible obi strips, select Kumazawa Shoten locations are showcasing special displays, including A1-sized panels and collaborative posters featuring both the anime and 22/7. Stores currently hosting these exhibits include:

• Musashi-Koganei North Exit Store
• Asakusa Store
• Seirei Kofu Store

Fans visiting these locations can snap photos, share their experiences online, and get a closer look at the visual artistry behind both franchises.

Why This Collaboration Resonates with Fans

The campaign doesn’t just bring attention to the manga or anime—it reflects a growing trend in Japanese media: cross-platform engagement. By linking an idol group known for voicing animated characters with a manga about complex sibling dynamics, the collaboration taps into overlapping fan communities. For longtime followers of 22/7 and newcomers drawn in by the emotional pull of The Shiunji Family Children, it’s a win-win—an experience that feels fresh, personal, and worth collecting.

Visit Kumazawa Shoten and Join the Celebration

This limited-edition event is already making waves, and supplies won’t last forever. Whether you’re a die-hard 22/7 fan, a fan of family-themed anime, or just love collecting unique manga extras, don’t miss your chance to participate. Head to your nearest participating Kumazawa Shoten store starting April 9, 2025, and see how this charming crossover brings anime, idols, and manga together under one roof.

Call to Action

🛍 Grab your copy of The Shiunji Family Children at Kumazawa Shoten starting April 9 and collect all six exclusive obi comments from 22/7 members!
📸 Don’t forget to visit the featured stores for special panel displays, and share your photos online!
✨ Whether you’re a fan of manga, anime, or idols—this is one crossover event you won’t want to miss.

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