"Simple yet Sexy" is a romantic comedy anime that explores the dynamics of relationships and self-discovery through the lives of its main characters. The narrative centers on Haruto, a reserved college student with a knack for overthinking, and Aoi, a confident and outgoing classmate who often teases him. Their interactions begin with playful banter, but as they spend more time together, their connection deepens, revealing vulnerabilities and insecurities beneath their contrasting personalities.

The story unfolds in a university setting, where Haruto and Aoi navigate the complexities of friendship, attraction, and personal growth. Haruto struggles with his self-esteem and fear of rejection, while Aoi grapples with societal expectations and her own hidden doubts about her identity. Their relationship evolves through a series of humorous and heartfelt moments, including study sessions, group outings, and unexpected confessions. Supporting characters, such as Haruto’s childhood friend Rina and Aoi’s protective older brother Kaito, add layers to the narrative by providing contrasting perspectives on love and relationships.

Themes of communication and emotional honesty are central to the plot, as misunderstandings and missteps often arise from the characters’ reluctance to express their true feelings. The series balances lighthearted comedy with poignant moments, creating a relatable portrayal of young adulthood. As Haruto and Aoi confront their fears and insecurities, they learn to embrace vulnerability and take risks in both love and life. The story concludes with a sense of growth and possibility, leaving their future open-ended but hopeful.