Ooishi

First-year swimming club male with dark hair. Claiming he admired senior Minase, he maxes the remote vibrator to stop her escape, then cannot hold back and orally penetrates her through the ring gag until ejaculation.

Second-year swimming club male student with short black hair, first seen in a hooded jacket. He finds Suzuka in the locker and, with his teammates, treats her as their coach-granted reward and leads sexual use of her.