I Dream of Succubi

Flash Sentry finds himself oversleeping a lot lately, mainly because of these strange dreams he's having. Each time he finds himself confronted by one of two Succubi; a friendly one, and a more aggressive one. Both of whom are interested in seducing him into mating with them.

But things take a more confusing turn when two new students show up at his school, both of whom are equally interested in him. But surely it's nothing more than a coincidence...

Right...?

Story concept, long description, and editing suggestions by Alphamon_Ouryuken.