Diabolik lovers: Yui's sister crossdress (On Hold)

Yui has an older brother named June Komori. Wait did I say older brother? I mean older sister! She doesn't like girly cloths and stuff like makeup so she just puts on whatever and because she has a flat chest she's mistaken for a dude. Like she cares do, she just follows the beat of her own drum. What will happen when she enters the picture? (Warning: There will be cussing and don't fucking get mad at me if it sucks like hell. You were motherfucking told!)