This post will have two answers. Firstly, going back to day ONE with this prompt, the most traumatizing anime scene to which I’ve ever been exposed has to be the club scene from the first episode of Devilman Crybaby. I didn’t make it all the way through. In fact, I noped out quite early. Still, that was the most heinous thing I’ve ever seen. So. There’s that.
I never seem to write about media that I didn’t like, so I left my aborted attempt at episodic reviews out there as a sort of testament to how very viscerally uncomfortable it made me.
I’m not going to link the scene here, and I don’t encourage you to go watch it.
Secondly, I think the entire Dramatical Murder OVA is also very disturbing. I’m given to understand that the OVA depicts the namesake game’s bad ends, and while the anime series itself nerfed all questionable content (and most of the BL, to be fair), the OVA had no such qualms. I encourage you to read my review of the series if you’d like more information. Like I said, when it comes to the anime series, you’re pretty safe, but the OVAs should be viewed with enormous caution due to violence, blood, and sex. I don’t even know how to give proper warning.
Likewise, I’m not going to link it, and while I encourage you to watch the series, I do not encourage you to watch the OVA.
stay home when you can, wear a mask (or two) when you can’t, wash your hands, and stay safe!