White fire's Questions (2)

Ok, so I don't exactly know if it's a manhua or manhwa and don't exactly remember the plot but I'll try describing the best way I could, it a bl comic of where the main leads are a switch but one of the ml is a vampire? And ig he can control when to switch and he changes hair colour from black to white
Also he has long hair
God I know it's not the best but I don't remember it

Does anyone know what's the alternative name of this Manhwa-
Devoured: The serpent and the pomegranate
Thank you