An invincible stealth old man whose existence is never acknowledged by anyone, and whose phenomena are not noticed until a certain time has passed. Today he has his sights set on a high school girl named Natsu. He stalks her, sneaks into her house and rapes her secretly. But he still wants to see her moan in disgust. In times like these, he puts his face on her underwear and kisses her. Then, the person he kisses becomes just like him. The other person will also be unrecognized by anyone, and will be able to see him. Now, he's going to rape her openly in front of her boyfriend and family...