Masurao Sujimori

筋森益荒男 筋森 益荒男（すじもり ますらお）

Gender:Male

A strict middle-aged male English teacher who enforces school regulations. 40 years old. He has an unusual background as a former mercenary and is characterized by his mustache and a large, well-trained, and sturdy physique. He often scolds Matsuri Kazamaki for unconsciously entering the men's restroom even after being gender-swapped. Despite his rugged appearance, he has an exceptional fondness for cats and has taken a liking to Shirogane, who wanders around the school building, chasing and nuzzling the cat. His true identity is a "Muscle Spectre" born from the thoughts of soldiers on the battlefield. As mentioned earlier, he spent a long time on the battlefield as a mercenary but realized he harbored a "longing for peace" in his heart, which led him to become a teacher.