Season 0 of Tsugumomo premiered on January 22, 2020.

Season 1 of Tsugumomo premiered on April 2, 2017.

In Japanese folklore, a "tsukumogami" is an object that has gained a soul, becoming alive and self-aware. There are two types of tsukumogami: the mature "tsugumomo," who have developed through long years of harmony with their owners, and the aberrant "amasogi," premature spirits that are only born to grant the destructive wishes of certain people.

Kazuya Kagami has never gone without his mother's obi after her death. Be it at home or school, he keeps it safe with him at all times. One day, he nearly loses his life when a wig amasogi attacks him. When all seems to be over, his treasured obi defends him, transforming into a beautiful girl. She introduces herself as Kiriha, a tsugumomo owned by Kazuya's mother.

With Kiriha's arrival, Kazuya enters a reality he has never seen before, a world with gods and tsukumogami.

Season 2 of Tsugumomo premiered on April 5, 2020.

This season starts off straight where the first season left off and well Kazuya and Kiriha has new enemies and allies to befriend all the while things are brewing with the attempt on Kukuri's life is at stake. Now before all that seriousness does arrive though, Kiriha and Kazuya for the early parts of this seasons goes go through the usual isolated amasogi spirit cases in Kazuya's school and even formed the Troubleshooters Club in order to combat these amasogi, some which seems directly a letter of war from the new enemies of this season all the while.