Inshoku no Jokumu

Nobuo is a high school student. He is quiet and teased by other students - mainly girls - at school.
One day, he decides to order a pillow. It seems people can have a good dream using it. A several days later, it arrives and he immediately uses it. He dreams of the girls who always tease him.
It goes like this: Some tentacles suddenly appear from his body and start raping them.... On the next day, the girls he raped in his dream are absent. He doesn't know why...