En Yufuin (由布院煙, Yufuin En) (alias Battle Lover Cerulean) is one of the main characters. He is voiced by Yuichiro Umehara. He is the most mature and handsome (indifferent to feelings between friends) of the five, and best friend of Atsushi.
En Yufuin (由布院煙, Yufuin En) (alias Battle Lover Cerulean) is one of the main characters. He is voiced by Yuichiro Umehara. He is the most mature and handsome (indifferent to feelings between friends) of the five, and best friend of Atsushi.