Recc Seme that are:

Guiding the illusion, dead man's switch, sugar trap, Scandalous wedding

Hosik's story, did it work

Lovesick dog, hide the mansion, The Sleeping Monster Forest

https://www.mangago.me/read-manga/dash_team_hazama/
https://www.mangago.me/read-manga/the_melting_season/
https://www.mangago.me/read-manga/sketch_1/
https://www.mangago.me/read-manga/honey_bear/
https://www.mangago.me/read-manga/my_influencer_boyfriend/

I’m not 100% that all of these don’t implicitly state that the seme is a virgin, but the other criteria are met for sure!

my list of both parties being virgins(it has buff bottoms mostly, and also no big age gap):
https://www.mangago.me/home/mangalist/3357670/
→descriptions are added if the story has a TW or if one of the party is a bit shitty.
→first 5-10 BLs are placed there for a reason. i love them, that's why.
→includes some switch couples who are virgin4virgin as well.

apart from that, if you want virgin seme x experienced uke(i dont like virgin x whore trope so i avoid it but i remember some BLs on top of my head):

1. dreaming of the dokkaebi
2. sketch
3. melting point
4. dawn of the dragon
5. you are so lovely
6. respect for taste
7. frey!
8. dear 00
9. dash

For what its worth, Virgin semes list?
https://www.mangago.me/home/mangalist/389464/

And uh, Unsleep comes to mind for hungry for uke

I have a list for virgin semes x non-virgin ukes https://www.mangago.me/home/mangalist/3710903/

Thanks you so much everyone!!

So many reccs, I will check it later.