If you liked
Tengen Toppa Gurren Lagann
|
...then you might like
Ginga Kikoutai Majestic Prince
|
Both are mecha, but is not only focused on fights, I feel like they pay attention to the characters and part of their lives in that situation. Also, in Majestic Prince, they're all teenagers and Gurren Lagann has a teenager as a protagonist too.
If you liked
Chuunibyou demo Koi ga Shitai!
|
...then you might like
Sabage-bu!
|
Characters from Sabagebu! are equally crazy and inmature. When they're playing, they imagine epic situations but none of that is real.
If you liked
Shiki
|
...then you might like
Corpse Party: Tortured Souls - Bougyakusareta Tamashii no Jukyou
|
If you're a fan of gore, you should definetely watch these two anime.
If you liked
Shiba Inuko-san
|
...then you might like
Kyou no Asuka Show
|
Both are very short comedies about highschool students. Pretty random too.
If you liked
Kyou no Asuka Show
|
...then you might like
Tonari no Seki-kun
|
Both are short comedies about character's daily lives.
If you liked
Sister Princess
|
...then you might like
Brothers Conflict
|
It's pretty much the same, a harem with a bunch of sisters/brothers and protagonist act the same way. The only difference is that Brothers Conflict is a reversed harem while Sister Princess is regular harem.
If you liked
School Days
|
...then you might like
Blood-C
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Both start as a normal slice of life kind of anime but have a unexpected, traumatic ending.
If you liked
Jigoku Shoujo
|
...then you might like
Mononoke
|
Main characters are demons that use their powers to help people. Both are horror. Difference is that in Jigoku Shoujo, people have to pay with their souls in order to get help.
If you liked
Puni Puni☆Poemii
|
...then you might like
Bobobo-bo Bo-bobo
|
Both are so random you don't even understand what's going on at any moment. Just that Puni Puni Poemii has only 2 episodes.
If you liked
MM!
|
...then you might like
Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru
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Both are comedy harem, same kind of random comedy. Protagonists are kinda similar, Sado Tarou is a declared masoquist while Amakusa Kanade is close to be one thanks to the choices he made.
If you liked
Mononoke
|
...then you might like
Yami Shibai
|
Both are japanese traditional horror stories.