A transfer student named Rei suddenly appeared. He doesn't even introduce himself and just keeps playing games....... How unpleasant.......

Then one day, Rei entered a room that students usually don't go into. You get curious and decide to follow him.
When you go inside, you hear "...Haa... Haa..." from the back. Bracing yourself, you see it.......
Rei, using a certain character on the game screen as material, doing it alone.......