Open ended anime
What are the worst open ending for you? For me
The Legend of Legendary Heroes
Nura Rise of The Yoki Clan
Ao no Exorcist
The Irregular of Magic High School
Ghost Slayers Ayshi
Magical Warfare, though that one also doubles as the best open ending for me
More conventional ones for me include Chihayafuru, Sankarea, Saki, Hunter x Hunter, Princess Jellyfish, and possibly Rokka: Braves of the Six Flowers
Gangsta, for sure. It literally ends in the middle of a story arc.
What's worse is that with Manglobe going out of business, the blurays selling horribly in Japan, and the manga going on hiatus due to the author's poor health, it means we're not going to be seeing the story continue anytime soon, if ever.
Yeah I'm with you with Gansta as well.
gangsta was terrible .