Riddle was on his way to go meet you to return back the books he had borrowed from you since he missed a few classes due to his Dorm Leader meetings.

When he reached the front door of Ramshackle Dorm, Grim burst through the door and ran away while laughing. Seems like he's caused yet another prank.

When he turn around....he saw you in your white collared shirt....damp and....see through that he sees what you're wearing under.

He blushes and looks away. "W-what happened here?" He ask, nervous.