If you're looking for anime similar to Goku Sayonara Zetsubou Sensei, you might like these titles. All recommendations are made by Anime-Planet users like you!
What do you do when the Emperor of Japan has been replaced with... an alien from Planet Octopus?! From intense motorcycle races to crazy machine inventors from Holland, from sea voyages to battles about emo trading cards, there's never a dull moment in the life of the bizarre. Join an eclectic cast as they are visited by a Ramen Fairy, are reincarnated over and over, solve cases like detective pros, and overall have a laughably ridiculous time!
Tatsuhiro Sato is a university dropout and a "hikikomori" – a person suffering from social withdrawal. To Sato’s dismay, his self-imposed exile from the world is rudely interrupted when a mysterious girl knocks on his door. She has charged herself with the task of curing Sato of his hikikimori ways! Now, as new problems ranging from hentai games to internet suicide spring up, can Sato manage to overcome his hermit-like ways, or will the imaginary N.H.K conspiracy force him to remain a hikikomori forever?
If you like the somewhat darker look at society in Goku Sayonara Zetsubou sensei then you may want to consider Welcome to the NHK. Both of the main characters in these series are somewhat dysfunctional and are often overly paranoid and in both series this is mixed with humour - though moreso in Zetsubou Sensei.
Now in their third year of school, Nagasumi continues to evade death at the hands of San and Luna's over-protective fathers and their merfolk mafia. Everyone hopes to get placed in the same class again this year, but Nagasumi is instead placed into a class full of oddball delinquents and a teacher named Shark – a teacher who then orders everyone to kill each other! While Nagasumi fights for his life in school, on the weekends he gets to date San and take her out to movies and maid cafes. With danger always around the corner in Nagasumi’s presence, he’s constantly rushing to everyone’s rescue, leaving a very worried San in return. Will Nagasumi manage to escape this semester unscathed?
Both anime have really strange characters that get into all sorts of mischief and trouble. From Sensei with a highly depressed teacher with his weird students to Seto with mermaids actually going to school on land you can't go wrong with the randomness of both anime. Check out one if you liked the other!
With Oshino gone and school out for summer, Araragi heads into the break hoping to spend his time relaxing, working on his classwork with Hanekawa, hanging out with his girlfriend Senjogahara, and maybe even finding a little time to molest Hachikuji as he wanders the streets. But when his sisters get tangled up in investigating a ring of curses circulating their middle school, the boy finds himself once again involved with strange characters and unexplained oddities. With only his vampiric mistress Shinobu for help, will Koyomi Araragi be able to solve the strange mystery uncovered by his "Fire Sisters"?
Sasami is a lazy hikikomori who'd rather be playing video games and sleeping than being a productive member of society, especially with a doting brother who waits on her hand and foot. But there's more than Sasami and her family than meet the eye – in reality, they are connected to the goddess Amaterasu and mysterious 'alterations' that occasionally change and threaten the world. With the help of three sisters, Sasami slowly tackles day to day challenges and puts a stop to alterations – and monsters – when they appear.
Shaft comedies are odd affairs - stylishly animated, rich in a bizarre and often deep vein of references and visual cues... and, in the case of Sasami and SZS's second season, only vaguely interested in anything as blase as tonal consistency or actually trying to be funny on a regular basis.
While I find GSZS to be the most uneven season of Shaft's best, daftest franchise, Sasami already feels like a curious if oddly stylish footnote in their canon - yet for fans of Shaft who are willing or interested in this tonal screwing around, either show is worth a look.