Tomohisa Kuze

久世知久 久世知久（くぜ ともひさ）

Gender:Male

Masachika and Yuki's paternal grandfather. He has a fondness for Russia and exposed Masachika to Russian literature and films during his childhood. During a three-way meeting with Masachika, he boldly asked Alisa, whom he met for the first time, if she would become his granddaughter.