- After Kogarasumaru defeats Behemoth in the cube battle, Simca (on Sora's orders) merges Genesis (the team that she, Spitfire, Nue, Yoshitsune and secretly Sora are part of) with Ikki's team. This is done to keep tabs on a band of rookies full of potential (that could become dangerous in the long run) and to locate the missing Wind Regalia.
- Ikki is challenged to jump the
Devil's 33 by Yoshitsune during his school's field trip to Osaka in order to prove his worth as the new "leader" of Genesis. After failing multiple times and injuring his leg, Ikki completes the stunt and beats Sora's old record at the same time.
- Ikki sent to a hospital where Sora trains him to become the new Wind King. In reality he's using Ikki to design and test a new and improved Wind Regalia that he can then use for his own means. Kururu (the world's most talented tuner) is also introduced here.
- Meanwhile, Kogarasumaru (with Kazu at the helm) is being attacked by Sleeping Forest, who are trying to thwart Sora's scheme but are being portrayed as the enemy at this point in the story. Spitfire decides to make Kazu the new Flame King after seeing his talent.
- Ikki is discharged from the hospital. As a member of Sleeping Forest, Ringo has to fight him. Ikki is all but defeated until Kururu comes to the rescue with the new Wind Regalia, resulting in a draw. Feeling guilty for his actions, Ikki decides leaves the sisters' home.
- Sora feels threatened by the skill Ikki displayed with the new Bagram and decides to hasten his plans by stealing the incomplete Regalia. Ikki is taken to the Trophaeum Tower (the huge elevator shaft that doubles as a geothermal power plant) and meets Kilik.
- Sora reveals his true plans and kills Spitfire, who gives the Flame Regalia to Kazu before dying. Sora and his brother Nike are taken to a US aircraft carrier and prepare for their offensive against Kilik in the
Gram Scale Tournament. If you're wondering why the military would get involved in this, recall that Air Trecks are powered by a revolutionary motor technology that was developed as part of a secret Japanese research project. The parts used in your average AT are very basic, but the tech itself has much more potential applications, including weapons, powered exoskeletons and more. By allying itself with Sora, the US military would gain access to the Sky Regalia, controlling all of the AT-derived tech in the world.
- Kogarasumaru battle the Old Sleeping Forest (Sora's old team) in a VR simulation. It's the only way for the team to compete in the GST as their ranking is too low otherwise (Koga split from Genesis after Sora's betrayal). They win and are introduced to US President-Elect Omaha (yes, he's a caricature of Obama) who explains the reason behind military interest in AT. He accidentally switches bodies with Emily as everyone is pulled out of the simulation.
- Genesis attacks Osaka to retrieve the Rumble Regalia. Yoshitsune is killed but Benkei is able to escape and give the regalia to Kogarasumaru. Kururu designs a new regalia for Ikki that combines the Wind and Rumble principles, dubbed the Storm Regalia.
- The Flame Regalia is stolen and Kazu becomes depressed. Ikki knocks him out of it after a fight that results in a tie.
- The GST begins. Kogarasumaru defeats Electric Circus and are about to fight their next opponent when we learn that Genesis is holding Rika hostage on the aircraft carrier. Kogarasumaru beats Sleipnir and heads to the aircraft carrier to rescue Rika.
- A bunch of fights ensue. Ikki beats Nue. Buccha beats Orca. Akito/Agito/Lind beat Arthur and Shalott with Kaito's help, and Onigiri beats Robo-Nike but gets stomped when the real one arrives. Kazu and Aeon team up against Nike and with Aeon dying in the process. Kazu defeats Nike with the full power of the Flame Regalia.
- All the members of Genesis on the aircraft carrier are defeated but the mission is a failure because Rika gets brainwashed. However, this allows Ikki to collect a bunch of regalia cores to power up the Storm Regalia.
- Rika is escorted back to the Trophaeum Tower by Dr. Minami and teams up with Sora to fight Kilik and the new Sleeping Forest.
- Sora tricks Kilik into using the incomplete Sky Regalia against him and uses the diversion to get his hands on the briefcase at the bottom of the shaft, giving him control of the complete Sky Regalia. He uses his new powers to kill Kilik.
- The Sky Regalia activates the true purpose of the Trophaeum Tower, which is a space elevator (or tower) rising 35 km high above the surface. It was built underground and designed to be elevated with the energy collected by the geothermal power plant over decades.
This was actually foreshadowed in Chapter 149.
- Ringo and Ikki storm the tower with their new Regalia and fight their way up to Sora and Rika who are at the top. While this is happening, we are treated to an exaggerated virtual simulation of what would happen if Ikki, whose Storm Regalia combines 7 powerful Regalia Cores into one and Sora, whose Wind Regalia integrates all of the other Regalia (he gained control of almost everything that is AT-related with the Sky Regalia, remember?) were to clash at their full power.
- They decide to have a 2v2 race to the bottom of the tower with Ikki and Sora being restricted from using their Regalia's power (because of the destruction that would ensue).
There's also a few points that don't fit in the summary but are nonetheless an important part of the storyline;
Gravity Children/Brain Chargers: One of the goals of AT technology was for people to achieve something close to flight. However, it was soon discovered that your average person lacked the skills to use Air Trek to its full potential, which led to the creation of Gravity Children. The project consisted of genetically altering human embryos in order to induce desirable traits such as improved spatial awareness, strength and sense of balance. These children were then forced to ride AT from birth. Sora, Kilik and Spitfire among others were part of the original 28 Gravity Children. Note that everyone but Kilik were to be disposed of as failures if it wasn't for the latter's intervention.
Brain Chargers, as their name implies, are regular humans that have gained the necessary skills to ride AT through brainwashing.
Dr. Minami: One of the brains behind AT technology and the GC/BC projects.
Sora, his apparent motives and the 99%: At first, this may seem like Oh Great is pulling another Omaha by ham-fisting Occupy Wall Street into the manga but that's not really the case.
During the Gravity Children project, the researchers were planning to dispose of every child (the 99%) except Kilik, who was exceptionally talented (the 1%). Sora would grow to hate the concept of a select few people being naturally gifted or wealthy compared to the the masses.
In his OWS-inspired speech, he is referring to the majority of the world's human population as the "99%". In other words, he is planning to use the power of the Sky Regalia to rule over the planet and solve all of its problems through AT technology's energy conservation/efficiency and by providing technological needs in people's everyday lives, thus making everyone "fly".
