Yui cheated on everyone with another man, which she was kicked out from the house. Yui wasn't even eve? But she did had the heart of eve, Which fate didn't even chose her to be eve. so Karl the father of the Sakamaki and mukami brothers and Karl had to choose the new eve, which was Subaru, Subaru was shock and didn't accept it, and had no other choice but get along with it. as Subaru was confused while all his half brother were acting strange around him. Subaru needs to solved this problem...