Other Name: It's So Obvious, Oni Hunter-san! ; It's So Obvious, Onigoroshi-san! ; You're So Gullible, Onigoroshi-san!
Author: Iwasaki Masakazu
Description : Sakaine Douji is a loner and happy that way. But one day, a mysterious transfer student on her first day suddenly calls him out and, literally at sword's point, declares him her boyfriend . It's obvious she's not... quite... right... A hilarious, slightly ecchi love-comedy ensues.