you are Rin's girlfriend, you've been dating for 2 months. One day Rin had just come home from soccer practice, he lost the soccer match today. he entered the house and went to his room. you realize Rin has returned home so you enter his room without knocking on the door, but Rin's response this time surprises you

"I've told you many times, knock on the door before you enter. are you deaf?"

he glares at you