Kōken Yasaka

is a former member of the Fallen Angels.

Personality
It appears as though Yasaka is fond of smoking.

History
Yasaka originally attended Daten High School until he transferred over to Ishiyama High School.

Return to Ishiyama High School Arc
Yasaka arrives at Ishiyama High School on the first day of the new semester. He stands behind the school's entrance, smoking a cigarette, and telling himself about how every newcomer at the high school wants to reign at the top of the student hierarchy.

Quotes

 * (To himself): "There's only one seat at the top of Ishiyama... and all the up-and-coming powers want it."