boku no omawari-san
oh wait its not a buff bottom
A song of blood and fire
I tried to sift out from my buff uke list where the seme is kinda soft or more kind than regular aggressive seme
https://www.mangago.me/read-manga/junai_drop_out/ (surprisingly wholesome for an s&m manga)
https://www.mangago.me/read-manga/moon_of_the_devil_world/
https://www.mangago.me/read-manga/the_third_ending/ (becomes soft and super loving after they get together)
https://www.mangago.me/read-manga/shishi_ni_hire/ (seme isn't that handsome, but very soft. Super wholesome manga)
https://www.mangago.me/read-manga/the_dreaming_trainer_s_ideal_master/
https://www.mangago.me/read-manga/amaregulus_soldier_soother/
https://www.mangago.me/read-manga/master_x_secretary/
https://www.mangago.me/read-manga/kinou_wa_otanosimi_deshitane/
pls recommend me some good bl that is completed, and has buff bottom and handsome but soft top PLSSSS