Responses
Kinda sounds like At the End of the Road which is probably not what you’re talking about but you might be interested in it
Oh I've read that since its release but it's not that
Found it, it was Mary Jane ( https://www.mangago.zone/read-manga/mary_jane/)
It's... horror or psychological? I think? A therapist or doctor? with his patient who has... I dont remember if it was BPD or DID? The specific scene that I remember was the doctor being horribly harmed in car crashed done by someone and his patient finding him, taking him back to their... hideout and care for his bruises. The patient then ends the chapter insinuating that he's gonna make the guy that orchestrated this pay or smth— I'm so sorry for being so vague