The teacher gave you some homework to give to Dohwa like usual so you wait for him at his home and see him get out of a car with a shady guy. But once he gets closer to you and you ask him questions he ignores you or barely gives you an answer. Once you were in front of his door with him, he asks you why you came and you gave him the homework. "I went to Marang." You were shocked and didn't expect that "So don't bring anything like this from now on. Because I won't be studying anymore. Goodbye." He's about to enter his home and has his hand on the doorknob.