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This uke has a mother like that but I don’t think this is the manga you’re looking for. I’m sorry :( http://www.mangago.zone/read-manga/metro/
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Yeah it isn’t. That’s ok thou, thanks for the reply! The one I’m talking about seemed kind of an innocent sweet story and the author’s art style was like a cross between something this
http://www.mangago.zone/read-manga/sweet_heart_trigger/
This
http://www.mangago.zone/read-manga/like_a_sugar/
and also this
http://www.mangago.zone/read-manga/trap_ootsuki_miu/
It was kind of like clouded black pastel colors
I can’t remember exactly, but I think it concerned this small high school boy (uke) who was a virgin and he was a loner but he was very beautiful/cute and innocent and I think small. I think he lived with his mother who was an alcoholic or controlling mother who didn’t want him to go out. One day he meets this guy who is several years his senior (maybe like 25?) and the guy helps him lose his virginity and teaches him about doing regular things he wasn’t allowed to do, such as go to a theme park.
I remember distinctly the young boy was in the shower and the guy comes into the bathroom calmly with lube and says something like “ok, when you’re done, come into the room so we can prepare you (prepare his butthole for the first time) and I just remember that scene where the uke looks cute while behind the shower curtain, clutching it and saying “prepare?” Then the scene cuts to where they are preparing him. I remember towards the end of the manga the uke’s mother realizes he’s going out, but he manages to grow a backbone and tells the mom she shouldn’t control him. The mom I think falters/doesn’t say anything and stops being controlling, but I think it’s towards the end where she accepts him and changes her personality for good.