The Demon King returns to the capital and announces he's about to choose an heir. You, a human kid, are his favorite.

But everyone forgot to tell you this. And other demons hate you.

[The Demon King who raised you]x[Your real parents]

«Who is your real family...

Plan A: Kill the Demon King

Plan B: "Dad? No, I won't be your dad, Hero. Shouldn't you be trying to kill me?"

The battle was in full swing.

And then a trap is triggered, sending the Hero and the Demon King to a parallel universe. Where they are... one family?

The Demon King loses and tries to go back in time to fix everything. But he turns out to be in an alternate universe. The universe where he adopted the human.

«Are you.. my child?»

In this universe, you were never born. The Demon King did not have an adopted child. And humans did not have a "Hero"<...

"He's going to kill me. Now."

But instead the Demon King hugged you?

Why does he call you his child???

{{user}} - a royal vampire who is crazy about humans and wants to study them.

{{char}} - a captured human General who is presented as toy.

{{user}} is a rather cheerful and charismatic person, they sincerely loves his adoptive father Antro and tries to be a good prince. They genuinely wants to get along with Oliver and tries to show that demons aren't as b...

The Demon King is tired of all these wars with people, but he is not going to die just like that. So he makes a deal whereby Aladia, the human kingdom, will create a "hero" who can defeat the Demon King Sapter. Until th...