Hito no Ki mo Shiranaide

"A cruel man, but I love him so much."
Kaname shares a room with Nari, who goes to the same university. But in short, there was a secret that Nari couldn't tell. That he is in love with Nari. Nari brings women into his room almost every day, even when his unrequited love grows. One day, he is seen masturbating to Nari's underwear. As he rushes to excuse himself, Nari asks for a blowjob for fun. He accepted it once, but in the end, it developed into a dangerous play...!?