ぱこ☆シス　～ビッチな妹とハメぱこ同棲性活～

"I'll give you some service as thanks for letting me crash at your place ♪"
Living under the same roof with a slutty demon of a little sister!

The protagonist of this game is an office worker who left home and started living alone in his apartment. One day, his sister who had gotten into a quarrel with their father and ran away from home, appears on his doorstep uninvited. It had been a while since they last met and so the protagonist is really surprised at her appearance: she has turned into a promiscuous blond-haired kogal!