I'm Standing on a Million Lives

You may know this one as 100-man no Inochi no Ue ni Ore wa Tatteiru; that's I'm Standing on a Million Lives under its other release name. Maho Film is the animation studio behind this TV series across 12 episodes. It's finished airing, so the whole thing is watchable start to finish.

It's filed here as Action, Drama, and Fantasy, which is usually the fastest way people find it while browsing by genre. If I'm Standing on a Million Lives works for you, Attack on Titan and Demon Slayer: Kimetsu no Yaiba are close matches — see the full related list below.