"...Now you're mine." They love each other from the bottom of their hearts... even though they're siblings Kiha, the daughter of a CEO of a hotel conglomeration, returns home from her study abroad program when she receives news of her father's sudden death. She has an older adopted brother who she's been in love with since she was little, and they reunite for the first time in ten years. She knows she should seal away those feelings, but Amane pressures her... "It's fine if it's only for tonight, but please let me do this." She knows she shouldn't agree, but her body melts. Kiha can't deny the twisted love she feels for her adopted brother, who is reciprocating in the same way...