"Ai tte Naani?" is a manga series that explores themes of love, identity, and self-discovery through the lens of a romantic comedy. The story centers around a high school student named Ai, who struggles to understand the concept of love due to her lack of experience and emotional detachment. Her life takes an unexpected turn when she encounters a mysterious transfer student named Naani, who claims to be an alien sent to Earth to study human emotions, particularly love.

Ai initially dismisses Naani's claims as absurd, but as their interactions deepen, she begins to question her own feelings and perceptions. Naani's unconventional behavior and candid observations about human relationships challenge Ai to confront her insecurities and fears about intimacy. The narrative unfolds through a series of comedic and heartfelt moments as the two characters navigate their evolving relationship, with Ai gradually opening up to the possibility of love and Naani learning more about the complexities of human emotions.

The supporting cast includes Ai's classmates and friends, who provide additional layers to the story. These characters often serve as foils or catalysts for Ai and Naani's growth, offering contrasting perspectives on love and relationships. The manga balances humor with poignant moments, creating a dynamic exploration of its central themes. As the story progresses, Ai and Naani's bond deepens, leading to a deeper understanding of themselves and each other, while also raising questions about the nature of love and connection in a broader sense.