Eita Kidou, a high school student, finds himself entangled in a complicated romantic situation when his childhood friend, Chiwa Harusaki, and his self-proclaimed girlfriend, Masuzu Natsukawa, begin competing for his affection. Chiwa, who has known Eita since childhood, harbors deep feelings for him but struggles to express them openly. Masuzu, on the other hand, is a beautiful and aloof transfer student who initially approaches Eita with a proposal to fake a romantic relationship to deter other suitors. Despite the arrangement being a facade, Masuzu’s feelings gradually become more genuine, leading to a rivalry with Chiwa.

The story unfolds in a school setting, with the central conflict revolving around the love triangle between Eita, Chiwa, and Masuzu. Eita, who is academically focused and often indifferent to romantic pursuits, becomes the focal point of their competition. Chiwa’s straightforward and cheerful personality contrasts with Masuzu’s calculated and reserved demeanor, creating a dynamic interplay of emotions and misunderstandings. As the series progresses, other characters, such as Ai Fuyuumi and Himeka Takanashi, further complicate the relationships, adding layers to the romantic tension.

The narrative explores themes of unrequited love, jealousy, and the complexities of human relationships. Eita’s struggle to navigate his feelings for both Chiwa and Masuzu forms the core of the story, with each character’s motivations and insecurities coming to light. The series balances comedic moments with dramatic developments, often highlighting the absurdity of the situations the characters find themselves in. The interactions between the characters are driven by their conflicting emotions, leading to a series of humorous and heartfelt encounters.

As the plot advances, the relationships between the characters evolve, with moments of reconciliation and confrontation. The story delves into the characters’ pasts, revealing how their histories shape their present actions and feelings. The love triangle remains unresolved for much of the series, maintaining a sense of tension and anticipation. The manga concludes with a resolution that ties together the various narrative threads, providing closure to the characters’ arcs while leaving room for interpretation regarding their future relationships.