BL where the side couple is more famous than the main couple

bj alex, tho you probably have heard of it alr since its one of the most popular :v

https://www.mangago.me/read-manga/19_days/
https://www.mangago.me/read-manga/mr_100_perfect/
https://www.mangago.me/read-manga/mujihi_na_otoko/ spin off of -->>> https://www.mangago.me/read-manga/i_want_to_be_naughty/
https://www.mangago.me/read-manga/therapy_game/ spin off of -->>> https://www.mangago.me/read-manga/secret_xxx/
https://www.mangago.me/read-manga/owaranai_fukou_ni_tsuite_no_hanashi/ spin off of-->>>> https://www.mangago.me/read-manga/gosan_no_heart/
https://www.mangago.me/read-manga/koisuru_boukun/ spin off of -->>> https://www.mangago.me/read-manga/challengers/

Thanks for the suggestion