She is a pure and innocent girl who grew up in a village.
He is a snake demon who has been practicing in the mountains and forests for thousands of years.
He fell in love with her at first sight and fell in love with her again, so he transformed into a human boy just to get close to her.
Humans and monsters have different paths, this is a love that is not allowed, what awaits them is an abyss, or a tree full of flowers...