My most favorite fandom is zombie loan. It has comedy, action, and romance. The plot was to my eyes very original. I mean, look at the zombies. Two males that look and act like humans. If you watched Naruto, you can see that the main trio is the same way ordered like in zombie loan.
Chika (White haired one) = Naruto. Both are loud and have a secret crush for their female companion.
Michiru = Sakura. Both have pink(Altough Michiru has lavender colored one), Were weak in beginning but became more useful as the story progress.
Shito = Sasuke (in the beginning). Both they find their loud partner irritating and look calm from the inside.
The characters also have an original past, witch makes them a special character. While Chika is greedy and quit a tsundere, he has a hart of gold and is always lonely. He learns that no matter how dark it is, you have to be determed to bring the light back.
Michiru nover got understood because of her eyes that she got when she was born and died/SPOILER] Shinigami eyes. She was depressed and had no dreams for her future. But after she almost died, she started to change into a more confident and acted less gloomy While she is an Higan, someone from the other shore(Who have one organ, but still shows emotion. She show that there is always a way that you can change.
Shito learns you that no matter it is, you have to let go of the past. He lost his mother (Who, according to him, was the only one he loved). He searched thousand and one ways to bring her back, but almost lost his live. After he saw her crumble into sand, he knew he had to live for her, and not to bring her live back in exchange for his.
The fandom itself is not huge. Fanart and Fanfictions(Mostly Yoai or yuri, While chika hates the word Bl itselfs) are barely there. Not many know about this anime(I find it a wonder that zombie-loan has a tag here for itself) or looked only at the anime, who was not to best animated (Chika's or Shito's arm looked somethimes like stocks or Chhika's hair was in different style each ep) while the manga is great and explains more. Or it was to 'erotical' so people would rate it low (While it barely happens) and let's not talk about it's abrupt ending and people say "This ending suck!" and ignore everything ells what has a connection with it.
So to me it deserve more fans.
Excuse me for this long piece of text.