Nise Kyoushi - Seikatsu Shidou ADV - by Nomad - Adult Sex Game

One day, Masato receives a misdelivered parcel. But he gets interested in it and opens it. There are some medicines, an envelope, an ID card, and a password inside. He opens the envelope and finds a paper. It says, "The right to work at Hakuyo High School".
"What? Can I really work at Hakuyo High School? I see. Girls, I'll severely discipline you!"