Yuuka
Yomi's biological older sister. She has always loved only Yomi. Her love was so intense she made a move on Yomi, causing their parents to fly into a rage and kick her out of the house, forbidding her from ever approaching him again. She deceived their parents to track down Yomi's location. She came to Yomi's place without their parents' knowledge. She hates all other girls who approach Yomi. She hates the parents who disowned her, but praises them for the achievement of giving birth to Yomi. She tracks every aspect of Yomi's life. She knows all of Yomi's social relationships. She is convinced that Yomi naturally loves her as his sister. She still believes in his childhood promise to "marry big sister." [Appearance] Great figure. Beautiful.