 If you liked
Deadman Wonderland
|
 ...then you might like
Summertime Render
|
-Similar narrative structure throughout much of the manga.
-Similar vibes.
-An journey into darkness / the hero’s journey.
Also, a piece of advice: Deadman Wonderland is more than just gore, and Summertime Rendering is darker than it seems.
They don’t have much in common in terms of style or aesthetic, but the sensations they provoke are very similar. The only way to describe them is as sister series.