BL manhwas with a kid and the manhwa shows the life of the kid all grown up

uhh kinda?
https://zinchangmanga.net/manga/he-guanyu-xu-xingchen/

Kinda near the end

https://www.mangago.zone/read-manga/keeper_of_the_pearl/

Blood link & silent lover
They even have story about the kids love life, but the kids are all toxic