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

Black Cat Cafe is located in the fifth ward of the Imperial Capital. Having lost their purpose after the war ended a few years prior, advanced mechanical dolls known as Automata have been restored and now work at the cafe wearing elegant kimonos. While they adjust to the peaceful world, events of the past continue to haunt the Automata, preventing them from letting go of the responsibility they once held. Among the Automata working at Black Cat Cafe is the recently restored Haizakura, who has lost her memories during a reset. Her identity and role in this unfamiliar world are a mystery to her, but one thing is certain—she loves to sing. With never-ending curiosity and beautiful songs to guide them, Haizakura and the Automata search for their new purpose together, supporting each other no matter how rigorous that endeavor might be.

A blog disproving the supernatural, co-run by NEET teenager Yuuta Gamon and his enthusiastic best friend Ryouka Narusawa, becomes the catalyst that would bring together a group of people who supposedly have nothing to do with each other. These individuals include high school fortune teller Miyuu Aikawa, who joins Yuuta to work on the blog; realist Sarai Hashigami, who is stunned when tragedy strikes his family; doujin artist Ririka Nishizono, who has an uncanny ability to predict the future with her art; black magic practitioner and local curse expert Aria Kurenaino and her ghostly friend; Shun Moritsuka, a seemingly childish otaku detective; and reporter Touko Sumikaze. As this unlikely group, bound only by the strings of fate, find their way to each other, they are confronted with murder and other events that are shrouded by the presence of the supernatural. They must band together to solve the mysteries interlacing the city and their lives. [Written by MAL Rewrite]

In the year 2020, technology is everywhere. Every digital device around the world is connected by a singular network where data travels. Unbeknownst to humans, this network has become home to life forms known as "Digimon." Fifth-grader Taichi Yagami is preparing for summer camp when strange occurrences begin in Tokyo; certain electronic systems have started going haywire. When he discovers that his sister and mother are trapped on an unstoppable train, he rushes to the nearby station. Suddenly, Taichi is transported to another world where he meets a strange creature by the name of Agumon, who somehow already knows his name. Taichi also receives a strange device called a "Digivice," which allows him to communicate with the undigitized world. Taichi discovers he is in the "Network," and virus-like Digimon are attacking the areas that maintain Tokyo’s electronic systems. It is up to Taichi and his new partner Agumon to stop these cyberattacks before the whole world is threatened by the actions of mischievous Digimon.