"Superflat First Love" is a romantic drama anime that explores the complexities of young love and self-discovery within a hyper-stylized, surreal world. The narrative centers on Haruto, a high school student who struggles with feelings of isolation and a lack of direction in life. His world changes when he encounters Aoi, a mysterious transfer student whose vibrant personality and unconventional outlook on life challenge his perceptions. Aoi introduces Haruto to the concept of "superflat," a philosophy that blurs the boundaries between reality and imagination, encouraging him to see the world in a new, multidimensional way.

As Haruto and Aoi grow closer, their relationship becomes a catalyst for personal growth. Haruto begins to confront his insecurities and fears, while Aoi grapples with her own hidden struggles, including a past that she keeps shrouded in mystery. The story unfolds through a series of episodic encounters, each delving deeper into their emotional journeys and the evolving dynamics of their bond. The narrative is punctuated by surreal, dreamlike sequences that reflect the characters' inner thoughts and emotions, blending the fantastical with the mundane.

Supporting characters, such as Haruto's childhood friend Rina and Aoi's enigmatic mentor, Professor Kuroda, add layers to the story. Rina represents a more grounded perspective, often serving as a foil to Aoi's idealism, while Professor Kuroda provides cryptic guidance that pushes both Haruto and Aoi to question their understanding of reality. The series balances moments of lighthearted humor with poignant introspection, creating a narrative that is both emotionally resonant and visually striking.

Themes of identity, artistic expression, and the transformative power of love are woven throughout the story. The anime's unique visual style, characterized by bold colors and flattened perspectives, mirrors the "superflat" philosophy and enhances the narrative's exploration of perception and reality. By the end of the series, Haruto and Aoi's journey culminates in a profound realization about the interconnectedness of their lives and the limitless possibilities of their shared future.