I'd use tags if I could, but can't, so I'll be kindly asking here :D

BL manga / webtoon recommendations where older uke sees younger seme as a little brother (or something), so he always takes care of him. On the other hand, seme has always loved him, but can't confess (can be either because he's still too young, or too weak, etc.)

Then they get separated and timeskip many years later, seme's all grown-up and finds uke again to finally pursue him *ahem* and get to do all the smexy stuff, jk. (I'm fine with just shounen ai)

I've already read the one by Kanda Neko, and the somehow similar Sayonara Alpha, and the one with the gay uke who meets this kid who apparently was a ghost (and a younger version of comatose seme who got into an accident).

I'm not too picky, the most important part is the seme finding uke again to finally confess :D

Thank you in advance!!