Yamana Makoto

In ~Makoto Hen~
A PE teacher at Yamana Academy, his grandfather is its chairman. A kind and pleasant young man, he's admired and trusted by the students. However, a certain event causes him to become convinced that the protagonist is his "fated lover" and Makoto becomes unable to hold back his feelings. His peers and Makoto himself see him as normal but he's somewhat of a broken person.