High school students Mizuho Yuuki and Miko Kamiyama are best friends. Miko likes fellow classmate Tohru Nagase. Mizuho is determined not to get in the way of their budding relationship. But underclassmate Ai Minamizato also likes Tohru. Tohru must decide which girl he likes the most. (Source: ANN)

The story is set in December of 2199, when the streets are full of anticipation for the end of the year and the start of the new one. Amid the celebrations, word spreads that Ragna the Bloodedge, an SS-class rebel with the highest ever bounty on his head, has appeared in the 13th Hierarchical City of Kagutsuchi. The apparent aim of Ragna or the "Grim Reaper" is the destruction of the system controlling the world. To collect the bounty, a motley array of unrivaled fighters converge on Kagutsuchi. (Source: ANN)

On the vivid and glistening waters of the Kanda River, Jetters and their respective Shooters race together on their jet skis, speeding through the wind as they participate in Jet Races—"the world's most intense aquatic sport!" Chasing her dream of becoming a professional Jet Racer like her mother, Rin Namiki transfers to Asakusa Girls' High School in Tokyo. There, she stumbles upon Misa Aoi, a first-year student like her. However, tensions arise when Rin and Misa find themselves competing in a race against Team Dress from the prestigious Musashino Girls' High School. As a result of the race, Rin tries to join her school's Jet Racing club, only to discover that there is none. But, her resolve is unshaken, and she decides to recruit Misa and three other girls to create her very own team: "Kandagawa Jet Girls." With her heart set on winning the annual Kandagawa Cup, Rin, alongside her team, approaches the grandest stage of them all. [Written by MAL Rewrite]

In an attempt to rescue Bellri and the others, Dellensen launches an attack on the pirate corps' Megafauna. Bellri, forced into space combat in Earth orbit, fails to realize he is facing his former instructor and shoots him down with the G-Self. Meanwhile, the Capital Army demands the return of the G-Self and Raraiya Monday, and deploys first the Mask team's Elf Bullocks and then Becker's Wuxia team. Behind the scenes, a crisis is developing which will drive them all to violate the taboos of SU-Cordism–the existence of a threat from space.