That JAV

My next-door neighbor's sister Karen has always been unfriendly, cold, and scary, so I'm not very good at her... but my parents are close and she's going to take care of me for a week when my parents go on vacation! But my parents are close, and she agreed to take care of me for a week while my parents went on vacation! Despite her blunt attitude, my sister is always trying to be a bitch to me! She watches my porn without my permission, calls me over to the SM club where I work part-time... and then I suddenly realize. Is she actually talking about me...? This is a completely subjective experience of living together with a big-breasted, tsundere sister and being lascivious!