If you liked
Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.
|
...then you might like
Little Busters!
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Both of these anime revolve around friendship and loss. Also, both are tearjerkers.
If you liked
Death Note
|
...then you might like
Code Geass: Hangyaku no Lelouch
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Code Geass is literally Death note with mechs. Main hero plans how to beat his opponents, then uses his power to do so. Lot of figuring stuff out, twist and turns in both of these. And both have main characters that you love and hate at the same time.
If you liked
K-On!
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...then you might like
Tamako Market
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Both are very fun little anime, that revolve around a community. In K-On! it's a club, in Tamako Market it's a shopping district. Both touch on subjects like friendship, and attachment towards their communities.
If you liked
Baka to Test to Shoukanjuu
|
...then you might like
Prison School
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If you liked the perverted humor in Baka and Test you'll get more of this here. A lot more in fact. Much less focused on actual story, homever if you don't take it too seriously you might just find it incredibly enjoyable.
If you liked
Hyouka
|
...then you might like
Yahari Ore no Seishun Love Comedy wa Machigatteiru.
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Smart protagonist solves problems. More romance, comedy and a little bit more character development.