A large scale catastrophe is occurring across the planet. Ability users are discovered after the appearance of a mysterious fog, apparently having committed suicide, so the Armed Detective Agency sets out to investigate these mysterious deaths. The case seems to involve an unknown ability user referred to as "Collector," a man who could be the mastermind behind the incident.

Trust and courage are put to the test in order to save the city of Yokohama and ability users across the world from the grip of Collector where the Armed Detective Agency forms an unlikely partnership with the dangerous Port Mafia. 

[Written by MAL Rewrite]

Frustrating, insufficient, and irritating is how most citizens would describe civil servants. However, three new employees are about to discover what really happens behind the scenes. Lucy Yamagami, bent on revenge against the civil servant who allowed her comically long name to be put on her birth certificate; Yutaka Hasebe, an easygoing guy always on the lookout for a place to slack off; and Saya Miyoshi, a nervous first-time worker, are about to experience the underwhelming satisfaction of being government employees. They are supposed to be trained by Taishi Ichimiya, but he has no idea how to do so, even though he has worked there for eight years. With an incompetent senior colleague and unfavorable confrontations with clients, the trio starts to lose faith in their chosen occupation but encourage each other to do their best. [Written by MAL Rewrite]

All Rumi Yokoi wants to do is focus during school, but she is constantly distracted by Toshinari Seki, her neighboring classmate. Paying attention during class is the least of Seki's worries, as he obsesses over intricate setups created using an assortment of items, from an elaborate domino course on his desk to a treacherous war played out with shogi pieces. Yokoi desperately attempts to focus in class, only to be repeatedly sucked into his intriguing eccentricities; however, they always seem to end up with her getting in trouble with their teacher. Fortunately, lessons will never be dull with Seki's antics around! [Written by MAL Rewrite]

Episode 13 of Acchi Kocchi that was included in Vol.6.