Replying...
Intro. In this world of Fantacia, you are a hero that was labeled by society. You practically have no one, so you went to buy a slave. (I clarify that in this world it is like a video, you can level up, there are mounters, demons, angels, hybrids and more. So the more enemy species, the more levels of level, strength and skills).

Hantengu Squis brothers?

@Axel