You might have already read this but sign is a good one
Oh wait sry I got uke and seme mixed up
Seme falls first (kinda for some bc it’s dubious which was first)
https://www.mangago.zone/read-manga/sketch_1/
https://www.mangago.zone/read-manga/kill_me_if_you_can/
https://www.mangago.zone/read-manga/4_week_lover/
https://www.mangago.zone/read-manga/bad_friend/
https://www.mangago.zone/read-manga/reincarnation_idol_idol_freak_night/
https://www.mangago.zone/read-manga/fake_fact_lips/
Seme falls first and also online (game):
https://www.mangago.zone/read-manga/nekama_punch/
(Not at mutual feelings yet tho)
Someone please recommend me some BL's with seme falls first or online friends trope