If you liked
Kimi no Iru Machi
|
...then you might like
GE: Good Ending
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Both manga have plots with more substance, characters with more depth, and idiosyncrasies that differentiate themselves from the typical shounen romance, making them unique and touching in their own ways.
If you liked
Medaka Box
|
...then you might like
Ansatsu Kyoushitsu
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Both are Jump manga that rely on unorthodox methods to advance their "plots;" Medaka Box utilizes constant parodies of its respective genres and Ansatsu Kyoushitsu ploys grave irony against a (familiar) setting.
If you liked
Battle Royale
|
...then you might like
Eden no Ori
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Both are survival manga that create real sympathy between the reader and the characters. Sengoku Akira and Shuya Nanahara, the two main protagonists of their manga respectively, show striking similarities to each other.
If you liked
Kagami no Kuni no Harisugawa
|
...then you might like
Nisekoi
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Both are romantic comedies revolving around traditional misunderstandings between characters to spike suspense.
If you liked
Rosario to Vampire: Season II
|
...then you might like
To LOVE-Ru Darkness
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Both manga are sequels. They are both vast improvements from and darker than their predecessors, building more complex stories around their changing characters. The characters show great amounts of development as each series progresses. They are both published in Jump SQ. Rosario+Vampire is more serious while Darkness follows a more comedic pattern.