Your search for "TinyTAN　イントゥコーポレーション　～10月15日 ピルケース" revealed the following:

© Aki Hamaji/Houbunsha・AniplexIntroducing 76mm pin badges from the anime “Bocchi the Rock!” We’ve turned Ryo Yamada from the TINY illustrations into these 76mm pin badges.Attach them to your bag or accessories, or display them in your room—enjoy incorporating these characters...

© Aki Hamaji/Houbunsha・AniplexIntroducing 76mm pin badges from the anime “Bocchi the Rock!” We’veturned Ryo Yamada, illustrated by TINY, into a 76mm pin badge. Attach them to your bag or accessories, or display them in your room—enjoy incorporating these characters into...