"Momokuri" is a romantic comedy anime that centers on the relationship between two high school students, Yuki Kurihara and Shinya Momotsuki. Yuki, a second-year student, harbors a deep infatuation for Shinya, a first-year student, after seeing him during the school entrance ceremony. She becomes obsessed with his cute appearance and mannerisms, often stalking him to take photos and collect information about his daily life. Despite her intense feelings, Yuki struggles to express them directly, leading to a series of awkward and humorous interactions.

Shinya, on the other hand, is initially unaware of Yuki's feelings but is drawn to her kindness and persistence. After Yuki finally confesses her love, Shinya agrees to date her, though he remains somewhat reserved and unsure about how to navigate the relationship. The series explores their budding romance, highlighting the challenges and misunderstandings that arise as they learn to communicate and understand each other's feelings.

The narrative is driven by the dynamics between Yuki and Shinya, as well as their interactions with friends and classmates. Yuki's best friend, Norika Kureha, often provides support and advice, while Shinya's friend, Takashi Nikaido, adds comedic relief with his laid-back personality. The series balances lighthearted moments with more introspective scenes, capturing the awkwardness and sweetness of first love.

Throughout the story, Yuki's over-the-top admiration for Shinya leads to humorous situations, such as her attempts to create "Momokuri" (a scrapbook of Shinya's daily life) or her exaggerated reactions to his every action. Shinya, though initially passive, gradually becomes more assertive and begins to reciprocate Yuki's feelings in his own quiet way. The anime portrays their relationship with a mix of comedy and sincerity, emphasizing the growth of both characters as they navigate the complexities of young love.