Karen, my next door neighbor, has always been unsociable, cold, and scary, so I don't really like her... But our parents get along well, so she decided to look after me for a week while my parents go on a trip! Despite her brusque attitude, she's always teasing me! She watches my adult videos without permission, invites me to the SM club where I work part-time... and then I suddenly realize. She's actually into me...? A completely subjective experience of living together with a tsundere big-breasted woman who teases me!