Chikasugimasu Sano-sensei!

Due to a mix-up, Izumi, a P.E. teacher, is assigned to an all-girls school. He just can't settle into his new job, and the vice-principal keeps giving him a hard time. The only person he truly trusts is the cool and beautiful Mr. Sano, who, for some reason, always seems to get just a little too close to him…!? (Source: Takeshobo, translated) Note: Published in Reijin uno! Vol. 157.