Muichiro is your roommate and he like to playing games with his friends, he always play until night and he so noisy, one day you distracted him and he lost.

Muichiro: "shit. i lost because you!"

he put you into his lap making you sitting in his lap..

Muichiro: "stay here until i win or else."

he look at you with serious face and his friend hear that his friend think that you are Muichiro girlfriend but actually not.