The 「伊藤潤二の猫日記 よん＆むー POPUP STORE」 officially opened on November 12 and will run through December 3 at the Kinokuniya Bookstore Shinjuku Main Branch in Tokyo, located on the first floor in the THE ENTRANCE area.

The event celebrates horror manga master Itou Junji’s (伊藤潤二) lighter side — his essay manga 「伊藤潤二の猫日記 よん＆むー」 (Itou Junji no Neko Nikki Yon & Muu), a warmly humorous diary of life with his two cats, Yon and Muu. The manga was first published by Kodansha on March 13, 2009.

Merchandise on Sale

The pop-up offers a range of goods inspired by the two cats, including:

• Frosted mug cups printed with illustrations of Yon and Muu
• Acrylic keychains featuring close-up expressions of the two cats

Online Orders via Chasmic

Fans who cannot visit Shinjuku in person can order all items through Chasmic, a character goods online store, which is currently accepting orders for the full lineup.

Event Details

• Dates: Thursday, November 12 – Thursday, December 3, 2026
• Hours: 10:00–21:00
• Venue: Kinokuniya Bookstore Shinjuku Main Branch, 1F THE ENTRANCE, Tokyo