"Wanna... do it...?" I'm freeloading off my sister and living in her apartment. Mistaken for her boyfriend in the dark, I'm forced against her naked body... Aaah! I'm so turned on!
Premise seems ok but it needs more chapters, i wonder if the sister is a tsundere, because she was being a big bitch towards the MC, so it would be nice to see him getting a bit of revenge