Shen Yi, who had been doted on by Yu Xiao since childhood, would never have thought that on his 18th birthday, Yu Xiao would transform into a demon and rape him. The next day, Yu Xiao loved and cared for him like an elder brother. This kind of Yu Xiao frightened Shen Yi. But who would have thought that Yu Xiao, who grew up in darkness, had already made a decision when he was a child, that is, he must make Shen Yi happy, because Shen Yi was the only person who was good to him when he was a child. But as time goes by, the brotherly relationship slowly deteriorates. How can Yu Xiao win Shen Yi's heart?