Anime ‘Demon Slayer: Kimetsu no Yaiba’ Gets New “Tsumamare” Keychains Featuring Infinity Castle Arc Designs!
From the anime ‘Demon Slayer: Kimetsu no Yaiba’, characters like Agatsuma Zenitsu and Hashibira Inosuke in their “Infinity Castle” arc appearances are becoming rubber keyholders in the fun “Tsumamare” series, which showcases their cute reactions to being pinched. Pre-orders are now being accepted!
‘Demon Slayer: Kimetsu no Yaiba’ is an anime based on the manga by Gotouge Koyoharu, published by Shueisha’s “Jump Comics” with 23 volumes and a cumulative circulation exceeding 150 million copies. It tells the story of a boy, Kamado Tanjirou, whose family is killed by demons. In order to turn his younger sister Kamado Nezuko, who has become a demon, back into a human, he joins the Demon Slayer Corps and throws himself into battle against demons. The series is beloved for its poignant tale of humans and demons, breathtaking sword fights, charming characters, and the occasional comedic scene.
The anime, with animation production handled by ufotable, began its series run with ‘TV Anime “Demon Slayer: Kimetsu no Yaiba” Kamado Tanjirou’s Determination Arc’ in April 2019. Following the story after ‘TV Anime “Demon Slayer: Kimetsu no Yaiba” Hashira Training Arc’, which aired from May 2024, the narrative continues with ‘Movie “Demon Slayer: Kimetsu no Yaiba” Infinity Castle Arc’, being produced as a trilogy. “Chapter 1: The Return of Akaza” was released on July 18, 2025.
Ten Characters Join the Cospa “Tsumamare” Series!
A total of ten characters—Agatsuma Zenitsu, Hashibira Inosuke, Tsuyuri Kanao, Kochou Shinobu, Yushirou, Akaza, Koyuki, Kokushibou, Douma, and Kaigaku—have joined Cospa’s “Tsumamare Series”. Their moments from the “Infinity Castle Arc” have been turned into cute rubber keyholders.
The Tsumamare Series is designed so that when you pinch the top, it looks like the character is being pinched. The thickness is a satisfying 5mm.
By removing the keyholder part, you can also use it as a “zipper pull charm” or in other ways to suit your preference. A separately sold “Pine Needle Cord & Earphone Jack Dust Cover Set” is also available, making it perfect for use with smartphones and other devices.
New T-Shirts Also Released!
Additionally, three new T-shirts have been released: the “Kamado Tanjirou & Tomioka Giyuu T-shirt”, the “Rengoku Kyoujurou’s Duty Fulfilled T-shirt”, and the “Chachamaru T-shirt”.
All are available in four sizes: S, M, L, and XL.
Pre-Order Information
Both the Tsumamare Series and the T-shirts are available for pre-order at the Cospa Official Shop and other retailers until March 1, 2026. Shipment is scheduled for mid-May 2026.
■COSPA Anime ‘Demon Slayer: Kimetsu no Yaiba’ New Goods
・Tsumamare Series 9th Wave (10 types total): 990 yen each (tax included)
・T-shirts (3 types total): 3,300 yen each (tax included)
(C) Gotouge Koyoharu / Shueisha, Aniplex, ufotable
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