Generations Rejoice: Beloved Picture Book 'Nezumi-kun's Vest' Gets Star-Studded Anime Adaptation

The beloved classic picture book, “Nezumi-kun’s Vest” (Nezumi-kun no Chokki), is set to be adapted into an anime series on NHK E-tele starting April 4, 2026, a revelation that has sparked significant buzz on social media.

The “Nezumi-kun’s Picture Book” series, cherished for over 50 years, will finally air as a weekly TV anime every Saturday morning at 9:30 AM, prompting numerous fans to express their surprise and delight. Posts like “I can’t believe it’s getting an anime!” and “So nostalgic!” are flooding timelines, with many recalling childhood memories, saying “I read this in elementary school” or “I was obsessed with reading it.”

A major point of interest is the star-studded cast. Kenjiro Tsuda has been announced to voice Nezumi-kun, the protagonist, alongside Mamiko Noto, leading to excited comments from fans such as “Kenjiro Tsuda and Mamiko Noto for Nezumi-kun’s Vest!” and “This duo is incredibly exciting!” Some comments even hinted at adult-oriented expectations given the pairing of these popular voice actors. Others noted, “Is it a trend in the voice acting world for Tsuda-san to play animals?” pointing out his recent character tendencies.

With the series airing weekly, many fans are hoping that not only the titular “Nezumi-kun’s Vest” but also other works from the series, such as “Nezumi-kun and the Pancakes” and “Nezumi-kun’s Christmas,” will be adapted. Some posts expressed nostalgia for specific stories, like “I feel like I read the story about the scale.”

People who remember reading the picture book to their children or recall reading it themselves are sharing warm family memories and highlighting the universal appeal of the work, with comments like “I used to read it to my kids too” and “It was one of the few picture books I, a mom who was bad at reading aloud, read to my daughter.” Conversely, some shared candid childhood memories of being saddened by the story’s development, saying “It made me so sad I couldn’t read it again,” indicating how deeply the work has resonated with children’s hearts.

The anime “Nezumi-kun’s Vest” is sure to be loved by new generations as well as long-time fans, bringing heartwarming stories to homes across Japan in the spring of 2026.

The context

“Nezumi-kun no Chokki” (Nezumi-kun’s Vest) is a highly beloved and iconic Japanese picture book first published in 1973. It’s the debut work in the long-running “Nezumi-kun’s Picture Book” series by illustrator Noriko Nakaya and author Hiroyuki Nakaya. The simple yet profound stories, often featuring Nezumi-kun (Mouse-kun) and his distinctive red vest, exploring themes of sharing, friendship, and gentle humor, have made it a staple in Japanese children’s literature, passed down through generations. Kenjiro Tsuda and Mamiko Noto are two of Japan’s most prominent and versatile voice actors, known for their extensive roles across anime, video games, and narration. Their casting in a children’s anime, especially for such an iconic work, is a significant event that excites both long-time fans of the picture book and followers of the voice acting industry. NHK E-tele is Japan’s educational broadcasting channel, known for its high-quality children’s programming.