I'm obsessed with him right now I'm sorry......... I couldn't bring myself to do fanart today. It had to be him.

In short: Reynold is a doting older brother and the younger brother is summoned to another world to save it as the hero. And the goddess who summoned him ends up returning to earth to ask Reynold "hey can you help me help your bro" and he agrees under the condition when he's sent to another world he wants to be a woman. So the goddess is like okay sure. And so in the other world he goes by Rey and supports the hero and does a better job at saving the world than the actual hero.

Reynold's legacy is becoming a cryptid in two worlds unintentionally.