The younger brother living next door was as cute as a small angel when he was a child, but after reuniting many years later, he drastically changed? In order to properly discipline this “rebellious” younger brother—Bai Yun, the gentle elder brother, Lan Tian, will do his best to take up on that responsibility. What Lan Tian didn’t know was that Bai Yun wanted to tell him: “You’ve been treating me as your younger brother, but I’ve never thought of you as my older brother!” Can a crush lasting many years finally blossom?