If you've enjoyed "Bojack Horseman" and "Rick and Morty," you might want to check out "Castlevania." It does a fantastic job of blending dark themes with rich character development and stunning animation from Powerhouse Animation. The fight scenes are beautifully choreographed, with a lot of attention to the fluidity of motion, definitely some sakuga moments that are worth watching for!
Another series to consider is "F is for Family." It tackles the complexities of family dynamics and societal issues while maintaining a sharp comedic edge. Plus, the voice acting is top-notch! Have you explored any anime in this realm? "Paranoia Agent" by Satoshi Kon is an incredible exploration of mental health and societal pressure. What do you think about mixing genres, like incorporating sci-fi elements in mature storytelling?