If you liked
Kiseijuu
|
...then you might like
Sweet Home
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Can't say too much due to spoilers, but there are a lot of similar elements of living with the darkness within you and trying to survive in a world with monsters
If you liked
Dragon Head
|
...then you might like
Sweet Home
|
Survival Horror, lots of uncertainty and fear, probably supernatural elements but it's a mystery in both series. Similar vibes of trying to scavenge in abandoned places
If you liked
Black Cat
|
...then you might like
Alive: Saishuu Shinkateki Shounen
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Both involve people, especially children, invoking fantastic powers to deal with their own weakness or to feed their own agendas. If you like one, you will definitely like the other.
If you liked
Rurouni Kenshin: Meiji Kenkaku Romantan
|
...then you might like
InuYasha
|
Rurouni Kenshin is like a darker version of Inuyasha. Both have powerful swordsmen as their protagonists who are fighting a demon within themselves. There is a very similar feel in the way that people gravitate toward them despite their anti-social nature. And while Inuyasha is more openly romantic, Rurouni Kenshin also has bits of romance. If I tell you much more about their similarities, I'll ruin the series, but they are very similar in every sense but the differences between shojo and shonen.
If you liked
Alive: Saishuu Shinkateki Shounen
|
...then you might like
Togari
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Togari and Alive are very similar in the way the protagonist grows throughout the story and they also share many themes. Both series focus on human psychology and the darkness of the human mind. They also share a dark atmosphere, Togari being the darker of the two. I absolutely recommend reading both. In fact, Togari is one of my favorite manga ever.
If you liked
Full Metal Panic!
|
...then you might like
Ranma ½
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The lead characters are incredibly similar. Kaname and Akane and both short-tempered, and violent, but also kind, sweet, and easily embarrassed. The male leads, Sagara and Ranma, are both romantically and sexually clueless. The relationship that they have with the female lead is also very similar. Both have incredible ability in combat, which often gets them in trouble.
If you liked
Naruto
|
...then you might like
Rekka no Honoo
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There is an incredible similarity in both the powers and personality of the main protagonist. I don't want to give anything away, but Recca screams Naruto to me.