AP-124 "It's not my fault! It's the big-breasted sister's fault!" The only friend I have as a shut-in is my sister! My sister is very kind, smart, and cute, and she has huge breasts! She is the ideal woman for me!

Film Introduction

My sister, who teaches me and takes care of me despite my being a shut-in, is my only ally! She's the ideal woman! But sometimes she wears clothes with high exposure that fully reveal her cleavage, and at those times I can't focus on studying at all, naturally getting an erection! When she noticed this, she was shocked and it really hit me hard! So, I forcefully groped her breasts and fucked her senseless!