If you're looking for anime similar to Hoshi no Kirby 3: 4-koma Gag Battle, you might like these titles.
When the young Kotarou (errr...Rotarou) washes up on Papuwa island with a case of amnesia, he has no idea that his life is about to take a turn for the bizarre. With housemates such as the man-maid Liquid, an asexual snail and a transsexual fish with legs, Rotarou will have his hands full! But beneath the tranquility of the island lies a dangerous secret that could destroy the island, and the answer lies only with Rotarou. With enemies from his past afoot, his friends trying to eat him and a giant poisonous mushroom trying to get him high, what’s a young boy to do?!
The Magic Academy is in peril! After Amelia's students inadvertently destroyed the magical floating device that kept the school safe in the sky, the island came crashing down into an area infested with demons. The only way to save the day is for Leon, Ruquia and the rest of the gang - along with their beloved teacher's help - to hunt down the missing pieces of the device. However, completing the task is easier said than done with angry dragons and even their own hunger working against them!
At the Magic Academy, students compete academically for magical stones. Classes and individuals who perform well are rewarded the stones, while those who are failing or involved with scandals have them taken away. Ruquia and her friends are in the Academy's lowest class. Their only hope is to make a comeback in the upcoming interclass group magic battle! Can this group of underachievers prove their worth?
In the beginning God created the light and the dark, but soon, the powers of light squared off against the powers of dark, and the world was plunged into war. Eventually, seven knights of lights with the power of Shadow rose up and sealed the darkness away. Now, many years later, Nene, the ruler of the Grand Kingdom, is trying to use the power of Shadow to plunge the world into chaos. Looking for other people with the power of Shadow, Nene sends his forces to attack Shu's village; but while defending his village, Shu unleashes the Shadow of Blue Dragon, the most powerful shadow known, and it goes berserk. Can Zola and Jiro, two other Shadow users who oppose Nene, teach Shu how to control Blue Dragon and save the world from chaos?