If you liked the Senyuu. anime, the Anime-Planet community thinks you'd like:
Takurou Mikoujima is an avid fisherman who loves nothing more than to sit alone on the pier and cast his line, enjoying the peace and relaxation that follows. But the boy’s pleasant, angling days soon come to an end when he gets an unexpected catch: a fat-tailed mermaid named Muromi whose very presence is anything but soothing! She’s nosy, rash and prone to violent outbursts; and what’s worse, she has friends! Whether the boy is harassed by the forgetful Harpy, the cheerful dolphin-lover Hii-can, the busty Fuji or the rest of Muromi’s wacky companions, one thing’s for sure: Takurou’s quiet days at the beach have come to an end!
Both animes have the persistent random humor factor, muromi is a little carefree with less of an underlying story but in my opinion has more hillarious moments. Senyu does have a light underlying story and does more satire on the whole final fantasy-esque genre, while muromi pokes fun at everything in anime as a whole.
Both of these shows are a mix of comedy and fantasy and have below average episode lengths. The quick humor is similar for both shows; if you thought one show was funny I think you'd like the other as well.
In the kingdom of Urak, the tower of Druaga is a source of fear and death; it is the cause of disease and monster attacks, and climbing it is impossible given the ferocity of the monsters within – until now. It is the Summer of Anu, a period that occurs once every five years during which the monsters are weakened. Jil, a guardian, is one adventurer whose goal is to reach the top level and slay the tower’s creator, the demon Druaga, and finally bring peace to Uruk with the help of a powerful artifact found within. However, Jil and his friends aren’t the only ones who aim for the top; it’s a race to the finish!
If you're looking for RPG parody anime, Senyuu and Tower of Druaga should be your next bet. Both have plenty of comedy and fantastical creatures and adventures to choose from.
Both shows are very much comedy parodies of fantasy Role-Playing Games. Senyuu has short episodes where Tower of Druaga is full length but both still have pretty good plots. I'm sure if you enjoyed one you'll like the other.
Red Riding Hood Chacha is an aspiring young mage who can't seem to get her spells right, commonly performing blunders like summoning a bouquet of noses instead of roses. But when her famous master and magician Seravi decides to send her to Magic School, things couldn't be better. Along with were-puppy Riiya, love-struck Shiine, Black Riding Hood Yakko-chan and other new friends, Chacha must survive both the evil forces which threaten the land and sadistic (yet still somehow caring) teachers alike!
Both anime have fast paced, over-the-top humor that parodies various things. I personally think that both series have a similar vibe and found both of them hillarious. It should be noted that Senyuu's episodes are only about 5 minutes long, while Cuticle Tantei Inaba has full lenth episodes. Still, if you like one, you may like the other.
Negishi Souichi always dreamed of joining a trendy pop band, so that he could perform music like that of his idol, Kahimi Karie. In order to realize his dream, he decided to leave the country side and his loving parents to study in Tokyo. And after graduating, he does manage to join a band... but not the kind he was expecting! As lead singer of the death metal band Detroit Metal City, under the stage name Krauser II, he is made to perform loud songs filled with obscene lyrics - a far cry from the songs he used to write in school. But despite the fact that Negishi hates DMC's music, the Krauser side of him will do anything to put on a good show for his fans... even if it means making Negishi's life a misery!
The setting might be different but the fact that they are both hilarious shows and are somewhat short anime, DMC being only about 12 minutes and Senyuu, only about 5 minutes, but can leave you laughing up until the end are what makes these show interesting.