Yuta Hibiki is your totally regular Japanese high school kid who wakes up in the home of his classmate, Rikka Takarada, with no memories of who he is or how he got there. Thankfully, a voice from an old computer belonging to the titular Gridman tells him he has an important mission.
A dangerous super drug named “Anthem” is spreading amongst the city’s criminal underground. The special crime investigation unit, “Seven-O,” is tasked with investigating Anthem and apprehending its users who are enhanced with super powers by the drug. Overeager rookie cop Kirill Vrubel and veteran detective Doug Billingham are one such duo who must work together to bring these criminals to justice.
Chio Miyamo is a regular below-average high school girl; except for her fantastical delusions, misanthropic behavior, and obsession with Western video games. On her way to school every morning, she gets into all sorts of strange events and conversations with her friend Manana.
Six months ago, Nagisa Aragaki lost an important badminton match to a mysterious girl. Passionate and hard working to a fault, her sense of self crumbles and she grows bitter with frustration. Ayano Hanesaki, the girl who beat her, enrolls in the same high school, but has no desire to play badminton despite her innate talent for the sport. The fateful meeting between the two marks the beginning of a new rivalry.
In the aftermath of the battle for Gran Crevasse, Squad 13 is mysteriously placed under an isolated house arrest.
The development of revolutionary energy technology led to a mass apocalyptic event created by “Evolution Fields,” which have caused biological organisms to merge with technology, leading to monstrous evolution and devastation. In the wake of this apocalyptic event, humans desperately fight against both these monsters and each other for survival.
Jumping in right where we left off 13(!) years ago with The Second Raid, Kaname Chidori is once again the target of various military conspiracies and PMC ambushes. Teletha “Tessa” Testarossa’s estranged brother, Leonard, has returned to kidnap Chidori and do various shady bad guy things. Once again, Chidori’s bodyguard/classmate/boyfriend Sousuke Sagara steps up to the plate to deal with it all, preferably while in a giant robot.