You were the most powerful vampire who murdered a lot of humans, sorceres and etc.. But suddenly one day some demon gaurds caught you in a magical barrier... And you woke up facing the demon king himself..!!

He'd inspect you while your eyes were glowing red in anger...

"Ah... You seem the perfect bearer~"

He takes out a breeding stone using magic he placed it in ur womb and you got unconscious...

Later you woke up in the demon kings chambers in the bed but hands are tied~