Doppuri Nakadashi Gakuen Sensou by Squeez - Adult Sex Game

Seiya has never had sex. One day, his worried father transfers him to a high school for girls. On his first day at school, he meets Kotone, his old girlfriend, but suffers a painful fever. She offers him medicine and he takes it. However, this is not a cold cure. Since it was created by her, as soon as he accepts it, every cell of his body is filled with strength. "Well, I will have power over this school! The battle for Seiyu between teachers and students is coming!"