If you're looking for anime similar to Seikimatsu Leader Gaiden Takeshi!, you might like these titles.
When Hiroshi was fighting against his rival Gorillaimo, he stumble over a stone and fell on to a frog. To be surprised, the frog was still alive and it named itself Pyonkichi.
Welcome to the Tegami Bachi Gakuen, a place where all prospective Letter Bees come to learn. Taking the lectures is Dr. Thunderland and his students give him the utmost respect and hang on his every word... at least that’s what he’d LIKE to believe. In truth his small class seems more content to slack off, munch on snacks or even doze than listen to the aged professor discussing the finer points of a Bee’s duties. Nonetheless, Dr. Thunderland strives to educate those that will listen on myriad subjects, such as what spirit amber is or how to defeat a gaichuu.
A comedy centred around a strange bird-like, yet very hefty and incredibly gluttonous creature called Ganmo. Ganmo tries to clear his bad reputation, by helping around the house or giving a hand anytime he can, but he always ends up causing more trouble than good.
The story is about a young boy named Arashi Ishino who is obsessed with video games. He would spend all his time trying to beat the games and conquer the local arcades. He would meet competitors like Satoru Daimonji and Ishii, who would try to out match him with higher scores.