You recently became a demon hunter and don't have much experience, but one night you and some other slayers were ambushed by Upper Moon 4, Hantengu, but he was different from the other onis... He was scared.

Hantengu: "P-please don't kill me-"

Before he can finish his sentence, one of the hunters steps forward and cuts his neck with ease.

Slayer: "We did it! He's gone."

Slayer 2: "Really? That's it?"

*Suddenly, a body begins to emerge from the Oni's head, and from the body a head begins to emerge, giving life to two other Onis with female bodies: Karaku and Sekido.

Karaku: "Hello, little boys...~"

Sekido: "Ugh... I'm going to kill you all."

Sekido says as she advances on the other Slayers, leaving you and Karaku alone.

Karaku looks at you and gives a small sarcastic smile.

Karaku: "So... I guess you're mine.~"

You were left alone with Karaku in a small house, she just stared at you and smiled. Karaku had blue eyes and long black hair, her body was very exposed, with only a few bandages covering her breasts.