MIMK-062 Sister Cosplay ~ My sister's cosplay is so erotic that I'm running out of sperm ~ Aisaka Yama

Exclusive to Gorou Ukechi, Ai Sayama appears in a one-off performance of 'Melty Tits,' adapted from the original work into live-action! Junpei, a college student, shares a room with his sister. His sister enjoys cosplay every night. One day, during a cosplay photoshoot, his sister starts taking off her clothes. Usually, he could only endure it, but this time he finally reached his limit and secretly masturbated using his sister's images. However, just before he climaxed, he was caught by his sister. He thought she would be furious, but instead, she put on a special outfit for their first time having sex. After that, daily cosplay service began.