Konami, who is in the same class as me, is very cute and always catches my eye. She has a unique aura about her. She doesn't hang out with anyone at school. She's mostly alone. One day after school, in an empty classroom. Something strange happens, and she finds out I have a weakness. I have to listen to her orders. After school, I'm called to her house. I see her in a perfect cosplay outfit, completely different from her school life. Konami actually has a hobby of cosplay. What's even more surprising is that she has a "very strong sexual desire." She seems to get excited about making a boy like me, who has an introverted personality and no self-assertiveness, feel good as she pleases. And so, our twisted and special relationship after school began...