Tan Baixu is a person with cognitive impairment in relationships. She doesn't know this, and Song Qingchen doesn't know this. Maybe that's why they missed it.
Song Qingchen has been in love with Tan Baixu for ten years, and has become the person who silently protects her, but only just a little bit.
He witnessed Tan Baixu's whole process from falling in love to getting married. At that dreamlike wedding, Song Qingchen whispered the last words, Tan Baixu, I like you.
He is willing to be her knight forever, as long as she can be happy. Her Royal Highness the Princess needs a prince, and he is the knight who protects her and is responsible for making her find happiness.
P. Regarding youthful love, not everything is happiness and sweetness. It is the norm not to be able to love, and childhood sweethearts are defeated by the sky.
Concept: Youthful crushes, misses and regrets all exist