Chou Kuse ni Narisou

Both are related to music and a main character that wants to sing even if someone important doesn't want her to sing. I recomment it because it's lovely and different to Chou kuse ni narisou in the plot and it's a little more mature when it comes to the story overall. 

Senseless and exaggerated comedy. Chou Kuse ni Narisou is even more "Wtf" than Shouwa Ahozoushi, even though Shouwa Ahozoushi has a slightly more exaggerated comedy. But in the end, whenever I think of something similar to Chou Kuse ni Narisou, I remember the horse anime. Another thing is that both the protagonist of Chou Kuse ni Narisou and Yuka of Shouwa Ahozoushi, both fight. One of the only differences is that Chou Kuse ni Narisou is an anime that involves idols and Shouwa Ahozoushi "Super Heros" (it's not like Tanne is actually one, especially since the title of the anime is literally "The Most Sophisticated Idiot of the Era Shouwa". read more 

Sana is a actress who goes to school to be a normal girl which is the same plot as this but in this Nagisa is a singer who dresses up as a boy to attend normal school. Both of these shows share slapstick strange comedy romance and strong female leads and similar animation Chou came out in 1993 and Kodocha in 1995.  

Both Slapstick comedy mix with romance ones a about a famous singing idol girl posing as a boy at school the other about two kids trying to take care of a UFO baby. 

i have not watched Chou Kuse ni Narisou yet (sorry >_<) but after reading the des i can tell it is IN A WAY similar to OURAN as the main character Female dresses up like a boy. 

Both have bizarre comedy, take place in Dojo though one of the leads is a part time singer. The romance is different though both very slap stick Chou has a lead romantic couple while Ranma has two people who like each or but just don't get along. Ranma is a gender bender hes a male who turns back and forth from female. The lead girl in Chou just dresses up as a boy at school. Chou Kuse ni Narisou is sometimes refer too as the female version of Ranma 1/2. 

Find your off the wall 1990s anime humor right here! Our main characters are starting school, one after being an idol and the other after being a shut in. You might think they they're dissimilar, but they both have cheerful attitudes and do what they want in humorous fashions, forget the system. There are also their companion characters, cute animals in one and cute missiles (yes) in the other. You'll also find a character with their own story which seems to struggle much more than the main becoming just as if not more interesting at times than them and hey, that's the joke....