im not shure if its love shuttle or something but all i know is the uke crossdressed and went to the doctor to see the seme and he is a docter and thats were the uke met the semes mother
It might be this one, but it’s the second couple.
https://www.mangago.me/read-manga/deliverance_of_the_counterattack/
I'm not actually remember what happens but I know he went back into time and he helped a girl the was magicaly had a color on her and he broke it and set her free from her old master that was the same age as them