Pearl boy
Missing love
I'm sorry wrong answer i had to reply this on other que
https://www.mangago.me/read-manga/work_fight_and_love/ (not really toxic but he suddenly abandons mc to have an arranged marriage, so the story basically changes main love interest halfway through the story)
https://www.mangago.me/read-manga/master_s_pet/
https://www.mangago.me/read-manga/hate_mate/
https://www.mangago.me/read-manga/prison_breakfast/
https://www.mangago.me/read-manga/the_snake_that_swallowed_the_pomegranate/ (I mean it has a poly ending, but the toxic ml is just kinda kept on the side because his and mc's lives are literally bound. mc's true love is the green flag ml)
Any bl love triangles with a toxic “first ml” and a green flag “second ml” but the mc bottom actually ends up with the second ml? But like, it seemed like it would end with the first guy cuz he came first and there were scenes yk