Takumi Sadohara

is a teacher at Saint Ishiyama Academy who is first assigned to the homeroom for the newly-transferred Ishiyama delinquents. He is later replaced by Zenjūrō Saotome but has since served as a substitute teacher during the latter's absence.

Powers & Abilities
Since he is a teacher, Sadohara shows no physical prowess and no intentions of getting into conflicts. However, in a flashback, he is shown to be the old champion of the Saint Ishiyama arm wrestling tournament earning him his nickname "Gold Arm Sadohara".

Quotes

 * "M-my... My Golden Arm!" - When Tōjō beats him severely in a "friendly" arm wrestle.