Koichi Kitagawa

 is a supporting character in the Queen's Quality series.

He is Kurokado Private High School's Principal and Chairman and also serves as a guidance counsellor for infested students.

Appearance & Personality
Much like Kyutaro in appearance, Koichi is a young handsome man who seems to be in his mid to late 20s. He is tall with black hair, that where Kyutaro's is straight, his has a curl to it.

Koichi's usual personality is quite comedic. Often he acts childish, a bit nervous and awkward. However when it comes to serious topics and events regarding infestations, he can show a mature and stoic, serious side. Koichi is also shown to have a kind 'Older brother'-like side, worrying for Kyutaro and wanting the best for both him and Fumi.

Mutsumi Kitagawa
Koichi is married to Kyutaro's older sister, Mutsumi Kitagawa, who we first see properly in Chapter 12 of Queen's Quality. Though according to Kyousuke Motomi, she is the blonde girl seen in the flashback to Kyutaro's past. (QQ Sweeper, volume 2, Sweep 10).