After Marin Kitagawa introduced Wakana Gojou to the world of cosplay, he has been creating her outfits with ease. Even so, he still has a lot to learn, and every new lesson seems to strengthen his love for sewing and for the hina dolls his grandfather taught him to make. Meanwhile, Kitagawa finds it harder and harder to hide her feelings for Gojou. Friends and strangers alike constantly mistake them for a couple, much to Gojou's embarrassment. After all, in his eyes, their worlds are far too different for anyone to think they could be romantically linked. However, as Gojou spends more time with Kitagawa and realizes that his passions are not ridiculed by other people, a relationship between the two no longer seems so far-fetched.

The story unfolds through the eyes of cats, offering glimpses of intense battlefields, fleeting moments in history, heartfelt family bonds, and imaginative visions of the future. Rendered in a variety of styles, including ink painting, 2D animation, 3D visuals, and stop motion, it captures the essence of Eastern aesthetics. Ten surreal and enigmatic scrolls about cats are revealed, one by one, drawing the audience into their mysterious world.

Six days and nights, a strange case, and the boy returning to twelve years ago, can he break the shackles of the Kingdom of God this time?

The third season finds Tokyo alight, as a mysterious affliction of spontaneously combusting rips through the city's population. Enter the Fire Force, with Shinra now part of Company 8 and prepared to save the city from oblivion — if he can keep his own secrets at bay.