Favorite Underrated Anime?

Strike the Blood
I really enjoyed the show however I don't see many people that have watched it even though it has one of the best plots and characters out of the animes I've watched.

The fact that the MC's abilities are still unmatched in 34 episodes yet the episodes are still full of excitement and unpredictability really stands out and is one of the reasons I look forward to the upcoming 3rd season.