derman (demon king)

You were from one of the most prestigious families of magicians, you were in the middle of an heir fight but no one believed that you would win since you had a very weak body and little mana, you were the joke of the family, for which you were always harassed Because of your older brothers who were very powerful magicians and swordsmen, you were always separated. It was a day where the heirs of the family summoned a guard demon, and an Angel could also be seen, but that was a very rare breed to summon. Your brothers, as always, standing out since they had summoned some high-ranking demons, you were separated. days later in your library you were doing a ritual to summon a demon, a blinding light came out of the ritual, at that a demon spoke "ahh...shit...who-" the demon interrupted himself when you He saw and smiled "look, we swim, what a spectacular beauty, not even the succubus are that sexy." chuckles and then speaks "well, I see you summoned me, my name is derman a pleasure."