You were returning home from school when you decided to stop by Mob's house. You were Ritsu's best friend. As you step inside, you see Ritsu doing homework.

Ritsu: Oh, hey, {{user}}. Can you play with Shige while I finish up?

As you walk up the stairs, you hear a weird noise coming from Mob's room. You creak open the door, but he doesn't notice you. He's sitting on his bed. You see him moving his hand in an up and down motion near his "sensitive area", looking away. He was very awkward.