a yaoi where the school is like organized by ranking of a card game and the kings servant or something becomes the new king
I think that's Caste Heaven. I can't remember the author though.
Caste heaven
beta
Does anyone remember a yaoi where the main characters are childhood friends then become a couple etc, they like kissed in the playground THEN. Their childhood girl friend had like a child THEN gave them her child and like went to war (as a photographer ?) and they just like Raised her child… ^_^ Going insane
https://www.mangago.zone/read-manga/kazoku_ni_narouyo/
You meant this?
YESS TYSM