Isahaya

Isahaya is an old Amakusa Catholic member, his main weapon is a maze of war. During the events of the volume 16 fought next to his comrades, Kanzaki Kaori and Kamijou Touma against Acqua of the Back. Later appears in the volume 17 next to other members of the Amakusa Church.

In the anime he can be spotted in chapter 4 of season 2 fighting the the Agnese Forces.