Responses
(Warning: some may contain dark themes/images)
Juujika no Rokunin
Brutal: Satsujin Kansatsukan no Kokuhaku
Shingeki no Kyojin (this one also has an anime)
Vinland Saga (this one also has an anime)
Miss Guillotine
Misumisou
The Devil's Boy
Zenaku no Kuzu
Unhinged
Untouchable Lady
Berserk (this one also has an anime)
Devil Returns To School Days
Jigoku Shoujo (this one also has an anime)
Save Me
The Dark Magician Transmigrates After 66666 Years
Good revenge, drama, I'm so starved of action plots, as long as there's revenge and action in it idc what kind of side genres it has