The official Twitter account for the Malevolent Spirits: Mononogatari anime has announced that the series’ second season is scheduled to premiere in Japan in July 2023.
Malevolent Spirits: Mononogatari is described as:
Filled with rage against spirits known as tsukumogami, Kunato Hyoma is sent to live with Nagatsuki Botan to help him see a different side. Though both are part of a clan that return the spirits back to their world with divine powers, their experiences with the otherworldly vessels are vastly different. Kunato, robbed of a loved one, and Nagatsuki, saved by them. Can she get through to him?
Malevolent Spirits: Mononogatari premiered on Japanese television on January 9, 2023. Crunchyroll simulcast the series as it aired in Japan.
Source: ANN