Naota is a detached sixth-grader afflicted by the pangs of puberty. When a crazed girl on a motor scooter runs him over and brains him with a bass guitar his life gets weird - giant-fighting-robots-shooting-from-his-skull weird.

Naota’s attacker, Haruko, is now his dad’s live-in housemaid and she says she’s an alien. Mamimi names the robot from Naota’s head Canti, the God of Flame. Does Canti have anything to do with the mysterious fires burning all over town?

The president of Naota’s class, Ninamori, is no stranger to the dirty deeds of politics. She rigs the vote to cast him as the lead role of their class play. But she gets in over her head after a crashing introduction to Haruko.

There’s a guy claiming to know Haruko and why she’s using Naota’s head as a portal for oversized battling robots. It’s too late, though, as a malfunctioning satellite is heading straight for them and it’s up to Naota to stop it!

Jealousy spurs an epic pellet gun battle between Naota and his dad over Haruko. The object of her desire will be revealed, and she’ll do whatever it takes to get him!

A hand statue looms over the Medical Mechanica building, threatening to iron out the city. As Mamimi’s new pet turns out to be a crucial element to Haruko’s plans, Naota finally proves that he’s no pushover.

Hidomi’s Dream – white ash covers the entire ruins, behind which a row of humongous irons comes thundering after Hidomi who is now a zombie.

Hidomi wakes up from yet another dream of her becoming a Zombie. At school, Raharu gives her a handout to bring over to Ide, who didn’t show up to class.

Crazy things happen during Hidomi’s NO activation, and she is now left with a cheerful and happy personality, which is the total opposite of her real self. The only way to bring her back to normal is to destroy the cables of the giant iron.

Marco is the only one that seems to think that happy Hidomi is attractive. While he’s aware that Ide is in love with her, he works part time to buy her a charm. Meanwhile, Jinyu and Raharu scheme to go up to the plant in her Bel Aire.

Having made damage to the plant, the iron now stands up straight. Raharu tells the class that she’s happily married and now pregnant. The only way to become happy is to go to the amusement park (run by Tonkichi).

Trying to get Ide back, Hidomi attacks Raharu physically first then verbally. She tells Raharu that she is acting immature because she knows that she is using Hidomi because Raharu is in love with Atomsk.

Kana Koumoto - a cheerful 17 year old who can often be a klutz and nosey. One day, while hanging out with her besties (Pets, Mossan and Hijiri), Mossan starts making a rocket using empty soda bottles.

One morning, Kana and her besties witness Hijiri kissing a college student Toshio inside his car. Acting more mature than any of her classmates, Hijiri suggests Kana and her besties to do a photo shoot with Toshio.

Mossan is the most mature of all 4. With a passion of becoming a designer, she has been working outside of school. Upon discovering her working towards a fashion contest, Kana feels the urge to help her, which rubs her the wrong way.

The 4 girls come watch the basketball game that their Sasaki is a member of. Kana has been secretly in love with Sasaki, whom Haruko ends up making out with. This triggers Kana's NO to activate, but she notices that and runs away.

One hot summer day, the 4 girls and Haruko are playing in the pool. They notice that Pets is missing. Kana later hears from her classmate Aida that Pet's family is very rich and they are moving to Mars.

Depressed, Kana flips over the collection of photos she took with her besties. The next day, the 3 girls gather by the beach as they watch the rocket Pets is supposed to be on.

Shinpachi, the son of a sushi chef, is busy preparing mysterious fish for the local customers. Haruko disguised as a hostess, visits the restaurant with the mayor, followed by a Medical Mechanica robot who threatens to destroy the planet.

In order to save Shonari from a miserable situation, Dainari works hard to buy a ticket to another planet, however he sustains injuries from a yakuza fight. Haruko to the rescue or so he thought but she only makes a chaotic situation worse.

Orinoko's father is a swordsmith, whose skills have rusted with the devastation of the city. In order to help, Orinoko rummages for scrap irons, and she meets Haruko who's also collecting irons to repair her Vespa, but what is her motive?

Masaki who's been having a hard time fitting in with his class due to his unique background and character, meets Harumi, who is even more eccentric than he is. She offers to help him off of his worries by bombing the Tsuganei Tower.

10 years since the chaotic events of Alternative, Kana rushes to the scene of the crime. In order to stop Harumi from her crazy schemes, Kana jumps in as the negotiator, when Masaki's NO gets triggered by Harumi's unexpected actions.

In order to stop Harumi's nonsensical actions, a sniper shoots Harumi down. Masaki is livid! Kana desperately tries to treat her, but she doesn't regain consciousness. With Masaki's emotions reaching their peak, his NO finally activates.