If you liked
Alien 9
|
...then you might like
Narutaru: Mukuro Naru Hoshi Tama Taru Ko
|
Both stories are centered around young girls with a story that starts somewhat innocent and quickly turns dark and grim. They both have somewhat cutesy artstyle but don't let that trick you, because some pages become real grotesque real quick. Both stories are also centered around and alien type of enemy.
If you liked
Durarara!!
|
...then you might like
Ikebukuro West Gate Park
|
Gang war activities in Tokyo. If you're looking for more Durara action then this might be for you. Ikebukuro West Gate Park is more on the realistic side though, so no supernatural activities.
If you liked
Air
|
...then you might like
Clannad: After Story
|
Both stories are incredibly compelling at making you feel. If you're looking for a good tearjerker then this is for you. The story builds up with the few episodes it has, but it really makes you fall in love with the characters, and creates an impact full end to the story. If you like these types of stories i would recommend watching more works from Key
If you liked
Yume Nikki
|
...then you might like
Majo no Ie: Ellen no Nikki
|
Both are adapted from rpg:maker games, so if you're into reading adapted works from games, this is a good read
If you liked
Brutal: Satsujin Keisatsukan no Kokuhaku
|
...then you might like
Juujika no Rokunin
|
Both manga's are about how to enact revenge in the worst and most excruciating way possible, if you're into evil people getting what they deserve then this is a good read for you. Not for the faint of heart.
If you liked
Gantz
|
...then you might like
Jagaaaaaan
|
Both have egoistic main characters that have great character development throughout the story with a great side cast. And the best part about both titles are the wacky, interesting and cool fights, and the designs of the monsters are extremely good.
If you liked
Jigokuraku
|
...then you might like
Chainsaw Man
|
If you really loved the dark vibe of Chainsaw Man and also read Jujutsu Kaisen, then you're going to love this manga. These 3 manga's are known as the dark trio of shounen, and as this is the 3rd member you understand where it's going. My favorite part of Jigokuraku is the cast, they make the story inteesting and the best reason to keep reading.
If you liked
Jujutsu Kaisen
|
...then you might like
Chainsaw Man
|
Another dark shounen title where it starts of somewhat happy and quickly turns dark. They strive away from the normal shounen formula and goes against the hero always wins norm. Both titles have very interesting and likable characters as well as a real good power system where they actually makes sense and are well thought out.
If you liked
Berserk
|
...then you might like
Claymore
|
Both are set in dark fantasy world where almost everything goes against the main character's odds. They are both well written and push trough the scenarios they are put through. Claymore's world is also very interesting and the world building and character developments is top tier.