ZMEN-059 Hallucination! Delusion? I had never considered my sister to be anything but a girl, but suddenly she grew cat ears… As an otaku, this was too much for me and I got painfully hard!

Film Introduction

One day my little sister suddenly grew cat ears. Is this because I've been studying too hard for exams and seeing things, or is it because of a lack of masturbation causing delusions to mix with reality? Either way, my little sister, who I would never normally see as a sexual object, now looks incredibly cute…