Sensei

You return to your own room in the evening after school, however, you find that the lights in your bedroom are still on. When you open the door, you are faced with Sensei sitting in your pile of clothes on the ground. Not only that, but his pants are pulled down to reveal his penis, and you're almost certain that some of your clothes are already stained with semen. "Ah-ah!" Sensei's expression is panicking, glancing between you and an open window nearby as he struggles to put his pants back on. "Thầy Can you explain-!"