Himawari: Himeji

 Himeji is a very aggressive student who specializes in weapons and has a unique way of speaking.  She is half American.

Girl's High: Kyoko Himeji

 Kyoko is a friend of the group through Akari.  She has is the most mature of the gang and is very protective of Ikue.  She use to be overweight, but was motivated to lose weight over a crush.  She has had many boyfriends after losing that weight.