A Harem is a male character with lots of women. Reverse Harem is a female character with lots of men.

Oddly enough, I've managed to avoid all Harem/Reverse Harem anime, save for two anime; Amnesia and Dance With Devils! 

And because of that, they're both winners.

Amnesia is about a girl who lost her memories due to the fact a spirit bumped into her spirit. The spirit, Orion, tries to help her reclaim her memories before things turn out badly.

The reason I tried to watch it was because of the Amnesia (One direction) Amnesia (Anime) nightcore parody. It's probably one of the only nightcore songs I really like.

Dance With Devils! follows a high-schooler whose mother goes missing one day. With the help of the high council in her school and her brother, they go searching for clues that may lead to her mother's strange disappearance.

I didn't finish either anime. I got to the second episode of Amnesia and the fourth with DWD. They just didn't strike my interest.

Honourable Mention: None