Cromartie High School

It’s Takashi Kamiyama’s first day at Cromartie High. The problem is that it’s a school for delinquents and Kamiyama doesn’t exactly fit in, Luckily, he has Shinjiro Hayashida to show him around. They go through the school meeting each of its wacky and hilarious students, including the three weirdest. When they come to the weirdest of three weirdest, Mechazawa, they instantly recognize that he’s a robot. But, no one else says anything.

Kamiyama and Hayashida are the only two who seem to realize that Mechazawa is actually a robot. They spy on him to see if anyone else notices that he’s a robot. After two close calls, the boys give up. After school they spot Mechazawa getting beat up by some bullies from a rival school. Kamiyama and Hayashida spy on him some more, but nobody seems to notice, not even when they stab Mechazawa with a knife that simply breaks on his hard body.

Shinjiro Hayashida hears Shinichi Mechazawa humming a song in the bathroom. Later that day, he starts humming the same tune, but can’t remember the name or artist. He asks Kamiyama, but he can’t remember it either. Pretty soon, the whole school is humming the song thinking of what its called. At the end of the day, nobody figured it out. As Kamiyama heads out, he hears Mechazawa humming the song! He asks him about it, but accidentally says that he knows it. Now, he can’t ask the only person who knows the song’s name, or else he’ll look like a “tool”.

Noboru Yamanouchi of Destrade High is not only strong in fights, he is also a great comedy critic! However, he has a rival named Honeyboy, who might turn out to be someone he knows...

Yutaka Takenouchi is the most respected yet feared first year at Cromartie High. He is completely unstoppable in battle, thus no one dares to pick a fight with him or anger him. But he has a weakness - he gets dizzy too easily. What will happen when he takes a trip to Nikkou? And will he be able to save Maeda after spending some much time in a taxi?!

Takeshi Hokuto is the son of the chairman of Cromartie High. He doesn’t want to go to a school with delinquents, but assures himself that his father can expel anyone he doesn’t like. But, is that enough? And when Hayashida tells him that their school is municipal, can Hokuto cover up his mistake of attending the wrong school?!

Noburou Yamanouchi of Destrade High has discovered that there’s not much to watch on TV anymore. He hopes to form an alliance with Kamiyama, until he finds out that Kamiyama likes a new TV comedy! Will Noburou ever realize what’s so funny about the new show? And what will happen when Kamiyama finally meets with his old Middle School friend?

It’s time for the physicals. The doctor is an experienced one, but he has a problem checking out Mechazawa. So, he instructs him to head to another “doctor”. Kamiyama and Hayashida accompany him and they wind up at an Electronics store. The man there checks out Mechazawa but accidentally erases his memory. At Maeda’s house, the boys celebrate Freddie’s birthday (which is just a day Kamiyama and Hayashida picked at random). Then another day, they celebrate Takenouchi’s. Maeda is upset that they have to celebrate it at his house.

Mechazawa introduces everyone to his little brother, Mini Mechazawa. But, when Gorilla accidentally crushes him, can Mechazawa cope with it? And what will happen when he comes to pick his bother up, but finds out that he’s been crushed again!

Cromartie High Vs. Bass High! The Bass High students infiltrate Cromartie High School in search of information, while Hayashida complains about their school being too "normal".

When Takenouchi winds up in the USA, an imposter takes his place in Cromartie. Will they boys notice it? And what will happen when Bass High takes Maeda hostage again?

Some boys come to Mechazawa to seek help from their enemy Bass High. Since Mechazawa has a friend in Bass High, they hope that he will be able to help them out. But, Mechazawa tells them that they have to clean up their own mess. Mechazawa heads out to play pachinko, but gets mistaken for a pachinko machine! He then gets some gas, but is mistaken for a motorcycle! He rides his motorcycle in the cold air at a high speed. He crashes into a wall and is found in many little pieces by Kamiyama and Hayashida. They put him back together, but merge him into a motorcycle! When some punks start trouble with a woman, Kamiyama comes riding on Motorcycle- Mechazawa and rescues her. However, for some reason, he’s thrown in jail!