Yeah, technically still Marvel, even if not associated with the cinematic universe, but also doesn't have actual super heroes, no one has powers like that, they invented themselves and what they can do to be heroes.

I watched Made in Abyss after hearing the beautiful OST by Kevin Penkin, even the later parts on Hi-dive, was not prepared for the gruesome injuries and body horrors that happened and to kids, but despite that, it had a moving story and beautiful scenery for most of it that paired well with the music, not sure what else to say in short other than it's one that hooks you and gives post-anime depression when you reach the end.