The 17-year old student carries himself in a stereotypically "40-year old" manner, and therefore is nicknamed "Old Man". Later in the series, it is hinted he has a crush on Iincho, and is occasionally mistaken for a pervert. wikipedia http://en.wikipedia.org/wiki/Doki_Doki_School_Hours
Gen Ohtori is the older brother of Jin Ohtori. He was very cruel to all those who opposed. He was also banished form the family when all the knights betrayed him.
4th generation T.F.O.A. member under Kunou Ryuushin.
A former student of the Gongenzaka Dojo and major fan of the former champion Strong Ishijima. When they were children Ankokuji would bully Yuuya about the disappearance of his father, as he "ran away" from dueling Strong Ishijima, with Gongenzaka saving him each time. As such Ankokuji has a general dislike for both of them.