While in the office, Yako finds a body cemented in a wall with a ponytail sticking out. Because of Neuro's demonic influence, the body regains "life" and is able to move only through her hair. Thus, Neuro hires the hair who calls herself as Akane, promising that someday she will eat the mystery of her murder as well. Later on, Yako goes with Kanae to a comedy show that was giving out free bentos so as to attract more people, where people start to die from laughing due to an unknown reason. Only a few manage to survive, including Yako and Kanae. The police, Sasazuka, Ishigaki and Neuro later show up, and with the help of Akane, Neuro discovers that the criminal was the man in charge of the lights, an ex-comedian, killing everyone by freezing poison in the roof and dripping into everybody's bentos for the sake of a "killer joke". He shoots at Neuro with Ishigaki's gun due to his claim that he was no comedian, yet he manages to survive and eats his mystery. Yako watches from far how the culprit is being arrested, and longs for the day Neuro will solve the mystery of her father's murder. (thetvdb.com)