Responses
https://www.mangago.zone/read-manga/love_strongly_surprise/
(I wouldn't say the seme used to be smaller, but he definitely had a glow up, just check it out)
Shit, now I feel like reading one too, I love this trope!!
Any bl like this where the seme is cute and smaller than the uke at first but grows up taller and more manly (no huge age gap or anything) .... ex demon king evelogia (even though we're still waiting on his transformation ) and https://www.mangago.zone/read-manga/monochrome_diary/