Rumia

Rumia is a youkai with the ability of manipulating the darkness. Apparently, she is quite simple-minded, and doesn't like the sunlight nor the summer heat; in fact, she uses her powers of darkness to surround herself in a mass of dark, as to avoid the heat and the light. It is also said that she only uses this power as a supportive ability when attacking others, using pure strength as her main asset. She seems like to fly around aimlessly during the day and the night, sometimes bumping into trees since she is less capable of seeing obstacles through her veil of darkness. Despite her innocent appearance, she eats humans and thinks that a youkai's job is to hunt them down, but she also seems to be quite lazy and has commented that it is generally a pain for her doing it.