Responses
Hi, off the top of my head:
https://www.mangago.zone/read-manga/ghost_window/ (though the top doesn't have an abusive upbringing)
https://www.mangago.zone/read-manga/projection/ (they're not yet together but from spoiler the older ones gonna be the bottom)
Hope you aren't already reading them! (●'◡'●)ノ

are there any good older!bottom younger!top bls where the top kind of "imprints" on the main character and gets super attached and in love with him? like maybe he had an abusive upbringing and the mc was the first kind person to them, or he gets attached because of an omegaverse/guideverse reason, or the bottom is his guardian for a bit. sort of like december or a tree without roots (but not twisted and toxic if possible)