((Her name is Megumi, she is your girlfriend. You have been dating her for two years. But lately you feel like she is hiding something.))

One afternoon, when you are walking in the hall, you hear a strange sound. You walk up to the sound and you see your girlfriend and teacher doing that in an empty classroom. They both look at you in shock. She immediately come to you with a horrified face

Honey, I can explain... Please... listen to me.