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.

Several days later, Yasaka sits in an office-like room inside a building with two others. Outside, Himekawa waits to begin his fight with Tōjō. One of the people with Yasaka ask him whether he actually can trust someone with as shady of a history as Himekawa. While holding up his left hand, Yasaka states that he cannot but trails off as he prospers the idea of Himekawa taking down an opponent as powerful as Tōjō. He later smiles shortly after the event occurs.

Quotes

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