In Japan's not-too-distant future, crime has become so common that the government has legalised firearms for citizens to use in self-defence. To combat this new wave of wrongdoing, the Recently Armed Police of Tokyo was established in hopes of hunting down criminals with lethal force. Kyohei Tachibana is a gifted culinary student who dreams of saving up enough money to become a pastry chef in France. When four young mercenaries ask him to be their cook, he's forced into making a tough choice. As Jo, Meg, Sei, and Amy take on the bloodiest jobs in the chaotic city of Tokyo, Kyohei accepts an imminent descent into the world of crime—and he'll do a lot more than just cooking!

Amsterdam, June 12, 1942. Anne celebrates her 13th birthday and begins her diary, which she calls "Kitty". Hiding for two years from the German threat, the young girl writes about her idealistic views on the world, her ambitions, her fears and her first love, Peter.

Despite his incredible bashfulness, Atsuhiro "Akkun" Kagari has landed the girl of his dreams: the sweet and loveable Non Katagiri. However, his embarrassment for affectionate acts—from giving compliments to exchanging a kiss—causes him to act harsh and downright mean to Katagiri in their day-to-day lives. But Akkun is still very much a boy in love; and he shows his admiration for Katagiri in his own way. From tailing her in order to take her picture to eavesdropping in on her conversations, he ends up stalking his own girlfriend. Luckily enough, Katagiri finds Akkun's actions cute and endearing, and knows he doesn't really mean any of his insults. Even if their close friend, Masago Matsuo, finds their dynamic a little odd, Katagiri loves her sweet tyrant just the way he is. [Written by MAL Rewrite]

Miu Takigawa views the world from behind the safety of her bangs, content with peacefully passing unnoticed through life. Reserved and timid, Miu struggles to converse with or even smile at customers when at her part time job, but she works tirelessly to support her mother and precious little sister, Haru. It is a shock when a letter arrives from the entertainment company GIP, announcing that she has been chosen as a candidate for their new project. Miu decides to accept the invitation and heads to the meeting spot where the eccentric ensemble of other candidates filter in, all summoned by their own letters. Not long after, the girls are escorted by a manager to a luxurious secret facility, where it is explained that they must follow the mysterious directions of "The Wall," whose orders are absolute. The 24th of December, 2016, will see the birth of idols like no other; on that day, the group 22/7 will debut, whether or not Miu and the other members are ready to take the stage. [Written by MAL Rewrite]