MIDV-699 I witnessed my sister, a NEET mourner, masturbating, and my sanity crumbled. Ishikawa Mio used a piston to explode, unaware that her younger sister was ejaculating.

"I saw it..."—My sister's room was filthy because she hadn't cleaned it properly. I'd worn the same shabby jersey since middle school. I was addicted to smartphones, and my eyesight was terrible. Eventually, he became a locked-up NEET. A typical widow... Of course, I wasn't interested in any of that, because they were siblings. —Seeing my sister masturbating so earnestly! At that moment, my sense of morality, ethics, and reason crumbled. She became a sex monster excited by her sister! Her withered, wretched genitals were awakened! I fucked her vagina again and again...