Neon Genesis Evangelion
I still don’t fully understand what what an angel is but it was cool so I don’t really care. The ending was great even if it doesn’t wrap things up concretely (because isn’t end of evangelion an alternate ending or something). It also kinda really episodic for a long time when you’re waiting for the story to start pointing towards what is commonly said about it. Those episodes are still great and all kinda lines up at the end so it doesn’t really matter. To expand on the characters and world it does rely a little on shoehorned at the end flash back episodes but oh well.