Yousuke Koiwai
小岩井 葉介
About
Yotsuba's adoptive father. The circumstances of her adoption are obscure—he tells Fuuka that without intending to, he found himself taking care of her while somewhere overseas, but gives no other details. Though he acknowledges Yotsuba is a bit odd, he can be offbeat himself. He is depicted as something of a slacker; he habitually wears an undershirt and boxer shorts when working at home during the summer, and apologizes more than once for being "irresponsible." He works from home as a translato...