Kinu has started working as a live-in housekeeper at the mansion where the three Kurotani brothers live. The eldest brother, Shuri, is shy, reclusive, and meek. The middle brother, Aisa, is a cool guy with black hair and glasses. The youngest brother, Touka, is spoiled and bubbly. All three are actually descended from a devil who drinks the "energy" from human women...!
from Renta!