Muchimuchi na Hoken Shitsu no Sensei ni Doutei o Sasageta Boku...

Morino, a short and frail student, is constantly bullied by his classmates. One day, they cornered him, saying they would "help" him experience his first ejaculation, but they were scared off when a nurse happened to pass by. She listened to his story and showed him kindness, putting him on the path to becoming a man.