Yuudai Saejima

Yuudai Saejima ( 冴島 雄大 Saejima Yuudai) was Minoru and Akane's former high school classmate at Sakurazaka Senior High. Following the fall of Japan to Magical Beasts, He became the Vice-Captain of the Knights of the human settlement of Messiah.

Appearance
Yuudai appears to be a young adult with short black hair and facial hair whilst wearing a black shirt with a necklace under a Sakurazaka Senior High uniform as his Messiah uniform. It should be noted that he was often referred to as a gorilla due his physique and expertise on Judo.