The Tsunashi couple is as lively and offbeat as ever. Hardcore otaku shut-in Hajime and workaholic office lady Kaoru still get themselves into hilarious situations thanks to both their own eccentric natures and the bizarre group of friends surrounding them. After learning about Kaoru's pregnancy, Hajime works harder than ever to become a good husband and a worthy father. Meanwhile, Kaoru reflects on their relationship and remembers all of the trials and tribulations that brought them closer. The two of them continue to put their best foot forward in their lives and their marriage—all for the sake of long-lasting, selfless love.

Kiri Haimura has an obsession with beautiful hair—specifically, cutting it. This bizarre trait is what leads him to seek out a rumored long-haired ghost who lives in an abandoned house on a hill. However, he finds not a ghost, but a beautiful girl with long flowing hair named Iwai Mushanokouji, the Hair Queen, whose hair cannot be cut due to a family curse. Iwai explains that there is a death game surrounding her, and that if she is killed by a cursed object, aptly named a Killing Good, the wielder gets their wish granted. After protecting Iwai from Authors—Killing Goods users—he learns there is in fact a Killing Good passed down in his own family: a pair of scissors used by his ancestor to commit murders. Naming the scissors The Severing Crime Edge, he finds that he is able to cut Iwai's cursed hair with them, setting her free to live a normal life. However, many Authors seek to kill the Hair Queen, and Kiri will have to protect her in this lethal game of fate.

The clueless boys of Sanada North High School never lack a new topic to dissect. Questions about girls are endless, the true meaning of being a man could be hidden in questionable chivalry, and there might be a moral side to silly pranks. With a different predicament always ongoing, the daily lives of high school boys are anything but boring.

Fleeing from the consequences of his decision at the Hell's Gate, superpowered Contractor Hei and his companion Yin take refuge in a quiet inn, adopting the guise of a married couple in order to not draw suspicion. In an attempt to recover from recent events, Hei befriends the inn's other guests. He discovers that one of them is a fellow Contractor tasked with killing him. Their resulting encounter spells disaster for both Hei and Yin, who are forced to fight for their lives and grapple with the emotional wounds sustained in their previous life together.