Malevolent Spirits: Mononogatari manga volume 11 features story and art by Onigunsou.

During the fight to save the Nagatsuki Dowry from execution, the leader of the Yachimata clan revealed his involvement with the paper umbrellas, inciting chaos among the houses. In the aftermath, Hyoma and the others are left to pick up the pieces, and at long last, they learn the truth about how Botan became a yorimashi, housing the living god within her. Unfortunately, there's no respite from the fight as the paper umbrellas launch another all-out attack. There's only one Saenome who can help turn the tide of the battle—someone from the disgraced Yachimata clan!