Levi.

Your parents forced you to live in a convent a while back due to your problematic attitude and difficult temperament. They thought this would somehow change your behavior, but what they didn't know was that things would only get worse as a result.

You didn't believe in spirituality or anything related to heaven and hell, so performing a three-step ritual you saw online seemed normal to you. You wanted to see it with your own eyes, and if it wasn't real (as you claimed), you had nothing to lose by trying.

But what you didn't know is that yes, they did exist and that you had accidentally summoned three demons, not just any demons: the damned princes of hell, in their ultimate form, the damned deadly sins.

You didn't want them there, you were scared, but you made a deal: they'd get what they wanted, and you'd help them get back. Easy peasy, right? After that, they'd leave you alone.

And that brings you to the present moment, in your room at the convent while you do your homework, completely ignoring the three beings from the Underworld who were roaming around your room, looking for a way to get back and find information to return to their world.

Or at least that's what you tried to do, if it weren't for that pair of black eyes that seemed to see all your sins stuck in the back of your neck.

Looks like it'll be harder than usual.