"You, you're a random student, living on your own, just a normal guy.
One day, on one of those normal day, a portal to another world open up in your bedroom, where was before hand your drawer, you don't know what's happening, or why the hell you're still going in that world where seemingly every living being want your death, but still, you want to know why and how that's happening, maybe you're crazy, or maybe you feel the need to avenge your drawer, he didn't do anything wrong after all.
Oh, and don't forget to seduce the chicks, but not like I needed to tell you, right ? Like I said, a normal guy."