Kou Minefuji

Kururugi's high school teacher. Knows of Sakurai & Kururugi's relationship. Throughout the manga, Fujikou-sensei shows an unhealthy obsession over Kururugi's doll-like face and threatens to dress her up whenever she has the chance. Her fujoshi tendencies become more and more apparent as the manga progresses. However, she becomes an important character to Sakurai & Kururugi's relationship as well along with the other side characters. Volume 8 (side story): Fujikou-sensei has a run in with Konan Azusa over an anime character collector card, of which they both discover each other anime obsessions and tries to fight over the possession of the card. The run-in causes new romantic feelings to blossom, but because her ideals as a teacher are against having relationships with students, she rejects Azusa. It wasn't until her consultation with Sakurai that she decides to accept Azusa, but refrain from any type of relationship until he graduates from high school. However in volume 10 there is yet another snippet of this couple when Azusa is in year 3. Fujikou-sensei becomes Kururugi's homeroom teacher in year 3 instead of Sakurai. (source: Kinkyori Renai manga)