Trama

Miyo Sasaki is in love with her classmate Kento Hinode and tries repeatedly to get Kento's attention by transforming into a cat, but at some point, the boundary between herself and the cat becomes ambiguous.

Miyo Sasaki is a weird second-year junior high student, who falls in love with her classmate Kento Hinode. Muge tries to make Kento notice her every day, but all in vain. Nevertheless, while carrying a secret she can tell no one, Muge continues to pursue Kento. Muge discovers a magic mask that allows her to transform into a cat, however, there is also a probability that she might never become human again, if she continues using the mask.—Scientiiaa

Miyo Sasaki is a 14-year-old girl living in the town of Tokoname, Aichi Prefecture. She does not get along with her stepmother, Kaoru. She always flirts with her crush, the handsome Kento Hinode, even though he has no romantic feelings for her at all, and often stays away from her. One day, she receives a magical Noh mask from a mysterious mask seller, which lets her become a cat. As "Taro," she spends time with Hinode, keeps him company while he studies Japanese pottery, and listens to his problems. She longs to confess that the cat he loves and the girl he dislikes are the same person.

One day, Miyo overhears two boys at school insulting Hinode and loudly intervenes by jumping off the school building to defend his honor. She hurts herself during the jump, and for the first time, Hinode shows warmth as he takes her to the nurse and shares his lunch with her. Later that evening, as Taro, Miyo learns that Hinode's family is closing their pottery shop, as the family can no longer afford it. The need to cheer him up inspires Miyo to confess her love in a letter. In class, a boy snatches the note before she can deliver it and reads it aloud, embarrassing Miyo and Hinode. Hinode saves face by publicly telling Miyo that he hates her and for her to stay far away from him.

A devastated Miyo decides life with Hinode as a cat is better than life without him as a human, and her human face falls off in the form of a porcelain mask. The mask seller obtains her face and tells her he will give it to a cat who wants to become human. Miyo's friends and family begin searching for her, including Hinode, who confesses to Taro that he does not actually hate her and wants to apologize for breaking her heart. Trapped in her cat body, Miyo begins losing her ability to understand humans and regrets her choice. Kinako, Kaoru's cat, obtains Miyo's human face and takes over her human life. She refuses to return Miyo's face, explaining that she is approaching the end of her natural lifespan but wishes to continue living and bring happiness to her owner.

Miyo follows the mask seller to the secret island of cats to convince him to turn her back into a human. Kinako comes to understand just how much Miyo's stepmom loved her cat and has a change of heart. She reveals the secret of the masks to Hinode and takes him to the island to save Miyo. Kinako gives Hinode a cat mask, which turns him into a half-cat; only his arms turn into those of a cat. Kinako and Hinode are trapped by the mask seller but are rescued by Miyo and another cat who used to be a human.

The mask seller takes Miyo and Hinode to the "promised place" and attempts to finalize their transformations by extracting their lifespan, but is foiled by all of the resentful humans that he had previously turned into cats. As they travel back to the human world, Hinode apologizes to Miyo for berating her and returns her feelings, finally agreeing to become her boyfriend, while Kinako returns Miyo's face, returning her to normal.

The credits show Miyo telling her friend about how Hinode loves her, Hinode telling his mother that he wants to do pottery, and Hinode doing Miyo's signature "Hinode sunrise attack" to her.