Piers Anthony’s Incarnations of Immortality series of books. The first book alone, where a guy who was about to unalive himself accidentally kills death instead as he walks in the door to take his soul, would make an awesome series. Each book takes on a different aspect of Immortality (Death, War, Time, Nature, etc.) and how they overcome Satan by not being used for ultimate evil.
That last sentence may seem religion-forward but the author, Piers Anthony, is not a religious writer by any means. Another series of his, Bio of a Space Tyrant, could be an ultra gritty R rated Sci-fi epic with the right director.
I’ve seen one episode of Secret and have no urge to find out what happens. If Loki is only 6 episodes like last season, this season so far has been a huge nothing sandwich. And episode 5 just came out!
You’re in for a treat with Bubblegum Crisis. I’d also recommend Nyan Koi, Evangelion (totally not niche but why not), and for a recent anime that has a 90s feel, Megalo Box. I’m a trove of anime suggestions lol
Canaan was the shit! Try finding fans of Bubblegum Crisis, Noir, Eatman, or Bakumatsu Kikensetsu Irohanihoheto; 90s anime kids don’t get together and have rewatch parties lol