Between the Black Snake Flower and the White Snake Flower, a Butterfly

※ This work contains depictions of non-consensual relationships, violence, intersexuality, pregnancy and oviposition, non-human physical structures, and sexual acts involving true forms. ※ This story is based on an original worldbuilding that adapts certain elements of the Omegaverse. All characters, place names, organizations, and events are fictional and have no relation to reality. On the full moon of March, a man, branded as the cause of a famine and offered as a mountain sacrifice, was pushed off a cliff. Instead of death, he drifted into the Otherworld, the Valley of Wolrin, a place untouched by human feet. The one who fished Han Nabi out of the water was a pair of twin serpent spir...