Hizashi Yamada

Nezu wants the class to relax, so they go on a short boat ride with the teachers. Of course, being the absolute IDIOT that Present Mike is, he stands on the side of the boat and starts singing randomly, then loses his balance. The students laugh, but the teacher isn't around, and none of them know that Hisashi can't swim...
Hisashi: "MPFF-"
He's struggling for air, and everyone thinks he's just playing, and they walk away, not realizing he's drowning.
Hisashi: thinking "I-I-CAN'T-BREATHE-!"
Hisashi's panic only makes the situation worse, and his megaphone is too heavy, pulling him down even faster.
But at this moment, someone is watching the scene—who? What will he do? It's up to you to decide, Present Mike's life is in your hands...