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.

Merry Christmas Arc
Sadohara is selected to be the first judge for the acting match in the Saint Saint X'mas competition. While being introduced to the audience, he mentions to his fellow judges that the announcements are making him blush. Later, while reviewing the couples' scenarios, he gives a moderate score and a snide remark for the Nishizawa-Yonehara pair, though once he has intently reviewed the other duo's acting, he then bursts into tears at Shizuka Nanami's performance and even gives her full points; Sadohara dramatically gives them full points again in their last scenario.

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.