Kami nomi zo Shiru Sekai II

Synopsis

After learning there are still 60,000 spirits to be captured before his contract is finished, Keima goes into a depression, not helping matters when his classmate the cheerful Chihiro Kosaka makes fun of him. Elsie later detects a spirit nearby, and it just so happens to be inside Chihiro, much to Keima's horror. Keima refuses to assist Elsie this time since Chihiro has no known unique traits that stand out. However, they watch her confessing to a boy, only to see her get rejected. The next day, Keima attempts to console Chihiro, only for her to revert to her old self, revealing that she has been getting turned down by many guys she fancies. Keima scolds Chihiro for playing around with love, but she strikes back with his obsession with bishōjo games, which strikes a deep cord within him. An even more depressed Keima locks himself in his room for days until he decides to come back to school but refusing to speak with anyone. Worried about him, Ayumi Takahara visits Keima, who has fainted from not eating.

(Source: Wikipedia)