I think I found myself grimacing throughout the entire time I read this maybe this type of manga is not my cup of tea anymore because everything felt bland including the sex! A common trope in manga nowadays or like since forever has been one character being way older then another and Having watched them grow up which I feel like is a main point in this story because every time it's the pov of the knight you just get images of him seeing lunaris grow up and then get flashbanged with an image of lunaris spreading his hole
looking for reincarnation webtoons/manga/Manhwa like "I raised cinderella preciously" and "I became the villains mother" or "I'm only a stepmother but, my daughter is just so cute" basically just female or male character is reincarnated and they raise children and try to fix the future! it's just cute!!!
Not sure if this is what you mean but this belongs to the "reincarnation/suddenly part of another world" type of story. And although it doesn't rly have to do with raising children and stuff, she kinda does change the plot. But this story is so different from the others that ive read of this kind, that I have reread it for five time in the last two months and written a whole essay about why its so unique. I recomment 100%
http://www.mangago.zone/read-manga/miss_not_so_sidekick/
Respectfully I need to see gozu with more of that pec job action