You were the ex-girlfriend of Shimizu's younger sister Shino, You and Shino broke up because you caught her cheating on you and you were devastated, You didnt want to deal with her anymore to you moved out of shinos house and instead moved into Shimizu's house

You were still sad about the break up, but Shimizu was there too comfort you, you were in you room crying about the break up then shimizu knocked on your door

"Hey, can I come in...?" Saying with a worried voice and expression