When Hyoma learns an unsettling new piece of information about Botan, he decides to take a much-needed break from the Nagatsuki household. Unsettled herself, and reeling from Hyoma's absence, Botan takes matters into her own hands and vows to learn more about her past and her own abilities. Since her family will sugarcoat the truth, she instead pays a visit to the head of the Kadomori Saenome. Will he give her the answers she seeks? Or is Botan, separated from all those who protect her, putting herself in a dangerous situation?

It's been two months since Hyoma moved in to the Nagatsuki residence, and he's starting to feel like part of the family. Sure, there's a marriage proposal that both he and Botan are trying to ignore, but overall, things have gone smoothly. As Botan begins her third year of university, Hyoma continues his specialized training. That is, until a high-level tsukumogami challenges him to a fight. This tsukumogami knew Hyoma's siblings--and also knows the paper umbrella tsukumogami who murdered them. And he knows something else, too--a secret that could shatter Hyoma's peaceful life!

Word of Hyoma's residence in the Nagatsuki household has spread throughout Kyoto, and the larger tsukumogami groups aren't happy about it. After all, no one has been allowed to get near Botan for years--human or tsukumogami. When Hyoma goes to pay his respects to a local Saenome clan, they ask him to get rid of Botan and her six tsukumogami once and for all. If Hyoma refuses, he might have an all-out clan war on his hands. His only option is to take on the entire clan by himself!

Subaru Sumeragi is a powerful onmyouji who solves the supernatural troubles that plague the citizens of Tokyo—both living and deceased! When Subaru meets an old man who shares his affinity for animals, he’s delighted to forge a new connection. But he doesn’t know about the troubled household and unfulfilled wish haunting his elderly friend...

There are powerful beings whose spirits dwell within old objects: tsukumogami. Hyoma is a young man who despises these evil spirits for robbing him of something precious. His mission: to use the supernatural powers granted to him to dispatch these tsukomogami back to their own world, no matter what it takes. But when Hyoma's grandfather sends him to live with Botan, a kind-hearted girl who peacefully shares a house with an assortment of overprotective tsukumogami, it's more than Hyoma can bear. Can Botan help Hyoma overcome his rage, or will his thirst for vengeance lead him down a dark and violent path?

Following an intense battle with a tsukumogami trying to draw out the dormant being within Botan, the Nagatsuki house is destroyed, and one of the Nagatsuki tsukumogami is gravely injured. Hyoma wants revenge, but the top priority is keeping Botan safe--which the Saenome clans now suspect the Nagatsukis aren't capable of. While the Nagatsuki tsukumogami head to Tokyo to plead their case, Hyoma stays behind with Botan at the Kadomori estate, where enemies could be lurking around every corner...

On their way to Tokyo, the Nagatsuki tsukumogami run into a strange roadblock--a whole group of paper umbrella tsukumogami who are after Botan. Suzuri manages to send a message to Botan in the nick of time, alerting Hyoma and the others at the Kadomori estate that a group they thought were allies are actually aligned with the paper umbrellas. A concentrated attack separates Hyoma and Botan from everyone else, and this time, Hyoma is determined to protect Botan at all costs--even if it means casting aside his chance for vengeance.