As Yuuya tries to find a way to level up in the Darkest Regions, he comes across a Black Fenrir pup. Yuuya Tames him, names him Night, and brings him home to live together as family. Side by side, they explore the Darkest Regions...and also go for walks.

Lucia finds herself attracted to Touya after he resolved the coup d'etat at the Regulus Empire. Picking up on that, Yumina proposes that they welcome Lucia in as Touya's fifth fiancee.

Noah and Raeliana attend a ball. Raeliana attempts to get closer to the wife of Marquess Eriteal at Noah's request, hoping to make him owe her a favor, but then another character from the novel appears: the antagonist Vivian.

Noah and Raeliana attend a ball. Raeliana attempts to get closer to the wife of Marquess Eriteal at Noah's request, hoping to make him owe her a favor, but then another character from the novel appears: the antagonist Vivian.

Masayuki is suspected of killing his ex-wife when the police find her dead. There was a message written in blood on her hand that put Masayuki at a great disadvantage. The only one who can vouch for his innocence with an alibi was Yuki-Onna, who was with him at the time of the murder. But there's no way he can let a yokai provide a statement for him. Yuki-Onna asks Kotoko for help to track down the real killer.

Tanuma is experiencing how Natsume lives every day. While Natsume and the youkai gain an understanding.

It has been two weeks since the attack on Plant Quetta. At first glance, it seems daily life at the school has remained peaceful, but a gag order has been imposed regarding the incident, and the members of Earth House feel suffocated. As preparations get under way for the next day's Open Campus event, a pair of transfer students appear before Suletta.

An Upper Rank Demon has been defeated for the first time in a hundred years by Uzui, Tanjiro and his comrades' effort. This news causes a ripple effect not only among the members of the Demon Slayer Corps, but also the Upper Rank Demons, who have been summoned by Muzan Kibutsuji. Meanwhile, Tanjiro is recovering at the Butterfly Mansion when he discovers that he has upset his swordsmith Haganezuka after chipping his sword and decides to head to the village where the swordsmiths live to talk to him in person.

As everyone in class begins to make plans for the upcoming break, Akane finds that she's the only one with a wide open schedule. Luckily, Taiyou's here to make sure that both of them have a fun summer vacation packed to the brim!

With Kasen's help, Tetsuo devises a way to dispose of the body. In the meantime, a group of men is looking for Nobuto. Tetsuo and Kasen give them false information to divert their attention.

With Kasen's help, Tetsuo devises a way to dispose of the body. In the meantime, a group of men is looking for Nobuto. Tetsuo and Kasen give them false information to divert their attention.

The group of men, led by Kyoichi, finds out Tetsuo and Kasen's lie and resorts to violence to interrogate them to find out what happened to Nobuto.

Adventurers Millie and Nina arrive to be Cain's tutors, but they're overwhelmed by his insane status. His power with both magic and the sword is so great that they decide to train him outside the mansion.