Does it matter what genre?
Yaoi:
https://www.mangago.zone/read-manga/kajou_mousou_shounen/ https://www.mangago.zone/read-manga/osananajimi_irony/ https://www.mangago.zone/read-manga/color_recipe/ https://www.mangago.zone/read-manga/camellia_minami/
Yuri:
https://www.mangago.zone/read-manga/your_fetters/ https://www.mangago.zone/read-manga/gwanggong_industrial_complex_weakness/
Hetero:
https://www.mangago.zone/read-manga/no_holes_barred/
no anything is fine
Minmotion Syndrome
For the 1st one it gets toxic between the Ml and the their ML
Third
hi I'm looking for toxic love stories