Highui Mitsuki was the first friend I ever had. A friend...? Three years ago, before entering high school, I raped her. After entering high school, we stopped talking, and I became a loner. That's natural. One day, she suddenly asked me to teach her how to study... I was confused, but I ended up teaching her in the library after school. And I learned about her feelings towards me from three years ago... A clumsy male student who doesn't know how to interact with girls is caught between pure feelings and sexual desire, leading to a twisted youth story.