I'd like to know too.
However if u like the type of blot u might like this one
https://www.mangago.me/read-manga/bl_game_no_shujinkou_no_otouto_de_aru_koto_ni_ki_ga_tsukimashita/
both stories are about twins
https://www.mangago.me/read-manga/passion_1/
https://www.mangago.me/read-manga/usotsuki_na_tsugai/
This one exactly matches your description- https://www.mangago.me/read-manga/no_color_baby/
Thanks guys
Idk if this exists, but does anyone know a BL where there's a pair of siblings, and one of them is more popular and more loved than the other, but the love interest falls for the guy that's not loved???
Idk if it's a thing, but this troupe would be so good