Yuuko means in Japanese 優 (yuu) "gentleness, superiority", 悠 (yuu) "distant, leisurely" or 裕 (yuu) "abundant" combined with 子 (ko) "child". Yuuko is one of the darker Yokai, a nekomata to be specific. He is a cursed demon waiting to prey upon the souls of those who have done wrong. Will you dare to try to win Yuuko's heart?