Milked by My Slutty Sister · The Secret Hole's Forbidden Pleasure Episode 2 / 2
After discovering a mysterious hole in the wall, the protagonist realizes his sister, Sayaka, has been using it to secretly invite his advances. The two enter into a taboo relationship where Sayaka embraces her role as her brother's personal "cock sleeve," leading to a cycle of daily pleasure and a confession of their mutual, forbidden love.
