I'm trying to find this yaoi manga with a blond uke and black-haired seme who is in a suit. I can only vaguely remember the manga cover but not the story. Can anyone help?
Try with these but there's probably a lot more that fit your description
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/joou_to_shitateya/
http://www.mangago.me/read-manga/on_or_off/
http://www.mangago.me/read-manga/shinai_naru_omega_e/
http://www.mangago.me/read-manga/the_new_employee/
http://www.mangago.me/read-manga/boku_no_kareshi_no_sukinahito/
http://www.mangago.me/read-manga/my_suha/
http://www.mangago.me/read-manga/neon_sign_amber/
Looking for that isekai where the saintess is summoned with another girl and she is ignored by the prince. She then goes to a research facility?
Just wanted to recommend you something similar (๑•ㅂ•)و✧
http://www.mangago.me/read-manga/seijo_no_hazu_ga_douyara_nottoraremashita/
Subscribing incase that this ends up like the other promos I have read