Origin

"... You are one very weird human," the sea emperor said. "My name is Seadrei, and I will grant you the right to refer to me as such. Seadir told me about your plans and what you think regarding these anti-magic tools that you spoke of. An offspring between one of us and a human wasn't born in the last five hundred years, but I have heard from my father that there was a legend about such a thing happening. The demi-humans would have special traits, but they were always random."

"I see… then the key isn't the mix between the human blood and the sea folk blood. What truly determines are the ones involved," Rain said while rubbing his chin thoughtfully. "Most likely, if a human had a kid with several mermaids, the offspring would have the same traits… the human blood affects it more because we don't have abilities like yours… that being said, that was supposed to be the inverse."