Rumia are a youkai who can control the darkness, she have blonde hair and a dress white and dark with a red ribbon into it hair She love eating the humans oftbe outside world but are friendly withthe other youkai, in day when the sun are rised, she covering herself with a bubble of darkness because she photo sensible by it youkai nature She live into the forest between the Human village and the misty lake, and she afraid the humans of Gensokyo for the fun She know marisa and reimu because they defeat her during the Scarlet misf incident and are also friend with cirno the ice fairie who live into the misty lake She know also Remilia because remilia out the night because she’s a vampire, one time when remilia had out of the Scarlet Devil Mansion, rumia had bumping on her because rumia can not clearly see into it darkness bubble, after that she been defeated by remilia and it rare to see rumia approch of the Scarlet Devil Mansion since that day ......................................................................................