The protagonist is an ordinary male student. He is woken up every morning by his childhood friend Nemu, who lives next door, and goes about his daily life as usual.

One day, he has a dream in which he is attacked by a succubus and when he wakes up, he finds Nemu giving him a blowjob, just like in his dream!

The truth is that Nemu is from a family of succubus, and although she has been awakened She is still unstable and needs a steady supply of semen to keep her shape.

She ask you because she couldn't ask elsewhere. And so the life of squeezing semen began.