If you liked the Chuunibyou Demo Koi ga Shitai! anime, the Anime-Planet community thinks you'd like:
Kodaka is a delinquent. At least, that’s what his fellow classmates seem to think. Thanks to his naturally-blonde hair and an unfortunate series of misunderstandings, the boy can’t seem to shake his false reputation and hasn’t made a single friend. That is, until one day he overhears the normally-aloof Yozora enthusiastically chatting with an imaginary friend, and discovers that she’s just as lonely as he is! In an attempt to finally meet people the duo decides to form the “Neighbors Club”, and are soon joined by a number of other fellow misfits such as Sena, the busty, popular daughter of the school president who can’t seem to connect with others. Together, the gang learns about the joys of friendship through many misadventures such as playing RPGs, visiting the swimming pool or even hunting down delicious takoyaki!
If you like a shameless show that involves a club of people who probably like each other, but spend a lot of time pretending not to and arguing for the sake of arguing, then these two anime are probably your cup of tea. Bonus for plenty of female characters with nerdy tendencies and questionable social skills.
Haganai and Chuunibyou Demo Koi ga Shitai are similar because of their socially awkward characters who are just outright hilarious. The main charcters in these two series are just entering the world of high school and are attempting to find ways to find friends and abandon their socially awkward history. In the process of doing so, they come across a set of girls who are even more awkward then themselves and eventually form a club with them where we witness a load of hilarious events.
The plots of these shows are completely different. Chuuibyou features teenagers whereas Samurai has adult characters. However, both shows are delusional people trying to function in modern society. They often do embarassing things and get into trouble because of these delusions. Also, both shows feature a straight man character that tries to help out the delusional character. Both shows are light hearted and include a lot of comedy.
Chuuibyou has better animation and has some fantasy action scenes that take place in the character's head. Samurai is more dialogue heavy and doesn't have the action scenes, but if you like humorous anime about character with delusions then you should try either of these anime.
If you are enjoying the superhero antics of Masayoshi Hazama, you should check out Chuunibyou Demo Koi ga Shitai! And if you are enjoying Takanashi's insistence of resistance to the Dark Forces, you should check out Hazama's superhero Samurai Flamenco. Both anime feature characters who are out to save/improve the world using extra-ordinary methods. In Chuunibyou, Rikka Takanashi is trying to save the world from the dark forces which only a special privileged few know exist.
Both Taka and Hazama are zealous (over-zealous even!) in their beliefs, and do not care what the rest of the world thinks of their method of choice in defeating evil. Taka uses custom-rigged everyday items endowed with supernatural forces to fight, while Hazama dresses up in his superhero costume to improve society and punish and admonish rule-breakers.
Both have a more-or-less "straight" man buddy to accompany them and ground them to reality, when their tendency is to take flight into their own private universes. Taka's friend is a school buddy and neighbor Yuuta Togashi and Hazama has a cop friend, Hidenoro Goto, who knows his secret identity.
If you enjoy buddy anime, and want to see age old fight of good versus evil played out with a new batch of heroes, check out either of these similarly themed shows.
The eccentric Suzumiya Haruhi wants nothing more than to meet aliens, time travelers and espers… but she’ll have to settle for the everyday Kyon instead! Along with the mysterious Itsuki and the vacant Mikuru, the duo forms the SOS Brigade – a club whose mission is to discover the mysteries of the world. Armed with a razor sharp wit and a skill for manipulation, Haruhi will stop at nothing to have fun at all costs, even at the expense of Mikuru’s dignity!
In both series, we have this school club which was started by a delusional girl who is into supernatural and we also have this cynical guy with a tendency to do tsukkomi (though the guy from Chuunibyou does it with more impact - literally). Both series also have a hint of romance and other weird kids who accompany the two mentioned earlier. The key difference would be the fact that the supernatural stuff in Suzumiya Haruhi no Yuutsu is actually real, while in Chuunibyou is all part of the delusions. Nonetheless if you liked one, the other might be worth checking out. Last but not least, both series are really funny.
If you liked Melancholy you will probably like Chuunibyou or vice versa. Both of these anime revolve around a hyperactive girl with an imagination just as alive. The main males are caught up in her plans against his will. Both involve school clubs and crazy events, either real or imaginary. A mixture of comedy and "action" ensue.
Death and reincarnation are inescapable, but what happens in between? Without warning and without his memories, a boy who only recalls his last name - Otonashi - wakes up next to a girl named Yuri who offers him a gun and tells him to shoot an angel. Assuming it must be a misunderstanding, Otonashi is then almost killed by the angel and is drawn into Yuri's army to battle to delay the beginning of his next life. Immortality is within reach, but if Otonashi remembers how he died, will he keep fighting or allow himself to vanish?
The only reason why I thought of Chuunibyou Demo Koi ga Shitai! while watching Angel Beats! was the male lead. It might not seem like that much of an excuse to write a recommendation, but I believe that such characters are rare in shounen and seinen manga. It's difficult to describe what kind of characters they are, but if I were to try, I would say they know what is the right thing to do and they follow through. They are someone others can depend on. If you liked the male lead in one of those series, then be sure to check the other series too.
Both explore the same set-up- guy used to be delusional, but finally managed to outgrow it. Now he's faced with his past self in the form of cute girl. He can't help but be involved in her fantasies and their struggle with reality begins.
Aura takes a more dramatic approach to the story while Chuu2 stays light and funny, but both are romances at their core. If you’ve seen one of them and want to see the story play out in a different way (with mostly the same main characters) check out the other.