He originally thought that he would accompany her silently throughout his life, and some words would be okay even if he didn't say them. But as he watched her grow up beside him, she took on the initial appearance of a girl, the appearance of her first love, and the appearance of being shy when facing the person he likes; he began to waver, whether he really wanted to say some words, whether he really wanted to express some feelings...
Purpose: We all want someone to grow up with