He Xinchen, who lost his parents, was brought home by his aunt. He always felt that he had a brotherly love for his naughty cousin. As time went by, he discovered that he had some unspeakable reactions towards this cousin.
From being cold and cool when he was young, to actually being sullen to death (aggression) × Lively and active but poor-tongued and cute (acceptance)
Ye Zhiqiu: He is just my brother
He Xinchen: ..... Maybe not
Purpose: Brotherly harmony and family harmony