Blue period x Heisei defeated soldiers☆Sumire-chan x Yanineko commemorative collaboration project

Blue period x Heisei defeated soldiers☆Sumire-chan x Yanineko

Collaboration product commemorating the simultaneous release of the new book on 5/22!

🄫Satomi U/Kodansha
🄫Nyanyan Factory/Kodansha
🄫Tsubasa Yamaguchi/Kodansha