If you liked
Dead Dead Demons Dededede Destruction
|
...then you might like
Takopii no Genzai
|
Both heavily feature a Doraemon-like alien character and two girls are the core of the series, along with one boy as a secondary romantic interest. Both deal with dark topics happening to cute girls, too, and they share a surreal artstyle with impactful panelling. There's also another important similarity, but it's a spoiler :(
If you liked
Kokou no Hito
|
...then you might like
Usogui
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Both have surreal artstyles that really improve throughout their run, with examples of the most beautiful and creative panels I've seen in the medium. Moreover, while their themes aren't similar at all (gambling vs sports manga), they are both standouts of their respective genres, and both their protagonists are lonely (although in Usogui it's much less relevant than in the Climber). Oh, and neither has anime.
If you liked
No Home
|
...then you might like
Ichinose-ke no Taizai
|
The main topic of both works is family: what it means, what it can do for you, what it can do to you, the way how you're raised follows you throughout your life, the cicle of violence... While I feel No Home deals with this theme better (and it's an overall masterpiece, hands down), Ichinose-ke portrays it with a creative artstyle and direction, so it's worth reading it too!