Emi Hanasaki, an elementary school student, helps run Tulip Café, her family's business managed by her mother. She owns Momo, a cat with white fur and pink accents who presides as the café's "idol." Emi's deep affection for cats manifests in her personal space, thoroughly decorated with cat-themed items and memorabilia.

She actively runs Momo's dedicated "Miauwaugram" social media account, attracting over 100,000 followers. Emi provides Momo with treats whenever the cat seems distressed or unsettled. At Tulip Café, she pitches in regularly with daily operations alongside her family.

Emi maintains friendships locally, particularly with Takeshi Okamoto, owner of another cat named Tama. Her world centers on caring for Momo, managing the café's social aspects tied to the cat's popularity, and navigating her school life.