When Shen Huaizhi was six years old, his family changed due to his parents' divorce. He resisted the arrival of a new member, Aunt Jiang. But Aunt Jiang's gentleness gradually melted the ice in his heart. With the birth of his younger brother Shen Chengyun, Shen Huaizhi has taken care of him since he was a child. Shen Huaizhi, who uses principles as a shield, accidentally bumps into the corner where the young man hides his nostalgia. The searching in the cold night, the impulsive defense of shortcomings, and the paranoid vows in bed made the indestructible educational creed retreat. It turns out that the deepest bond is that you and I are willing to break all boundaries for each other and save each other in the mismatched years ("Cheng" is taken from the younger brother "Chengyun", and "Yue" refers to the emotional agreement, which coincides with the brother's "promise" from hesitation to acceptance, a strong pun)
Concept: Through plots such as "asking for a kiss to confirm love" and "forbidden love", the younger brother's uneasiness is transformed into paranoid possessiveness, and the older brother provides a sense of security with an unconditional promise.