Synopsis:
Milky-chan is tasked with taking care of her shut-in best friend while his mother is away. Feeling like she is the only person who truly understands him, she happily accepts the responsibility.
However, when her friend refuses to come down for lunch, Milky-chan goes up to his room and accidentally catches him in the act of “self-pleasure” while watching adult films. Soon after, she even discovers a guidebook in his room on how to have relations with women.
Instead of being angry or ashamed, Milky-chan makes an unbelievable offer: She volunteers to be his “practice partner” so he can learn and experience the real thing. But the lesson only becomes truly perfect when she puts on a cosplay outfit tailored specifically to his fantasies!
