https://www.mangago.zone/tag/Toxic+relationship/
I put yaoi in specifically, so I hope you find a great read.
https://www.mangago.zone/read-manga/the_brothers_secrets/ (codependency)
https://www.mangago.zone/read-manga/no_return_after_use/ (using each other)
https://www.mangago.zone/read-manga/an_eye_for_an_eye_geumbab/ (????)
https://www.mangago.zone/read-manga/ashtray/ (pure evil idk man)
https://www.mangago.zone/read-manga/lost_jujucat/ (kidnapping & brain washing)
https://www.mangago.zone/read-manga/unholy_lilith/ (power imbalance)
https://www.mangago.zone/read-manga/my_hyung_s_lover/ (codependency)
https://www.mangago.zone/read-manga/my_idol_diary/ (vengeful??? stalker)
why do you hate low tide in twilight though? it also qualifies as toxic
Can anyone recommend toxic yaois? Here are some stories I like:
Feeding Lamb
Heartless
Master-Peace
Unchanged Man
Takatora-kun to Omegatachi
Dark Heaven
Darkness Before the Dawn
Kokoro O Korosu Houhou
Also I absolutely hate Low Tide in Twilight, so no stories similar to that please