"Ai Shite Night" centers on Yaeko "Yakko" Mitamura, a 16-year-old girl who works at her family's Chinese restaurant in Tokyo. Yakko harbors a deep crush on Go Kato, a handsome and popular high school student who frequents the restaurant. Despite her feelings, Yakko struggles to express them, often feeling overshadowed by her lack of confidence and her perception of Go as unattainable. Her life takes a dramatic turn when she encounters a mysterious boy named Banjo "Ban" Shogo, a rebellious rock musician with a rough demeanor. Ban, who initially appears abrasive and self-centered, becomes inexplicably drawn to Yakko, leading to a complex love triangle.

Ban's pursuit of Yakko is relentless, and his brash personality contrasts sharply with Go's polite and reserved nature. As the story progresses, Yakko finds herself torn between her idealized love for Go and the growing, albeit confusing, feelings she develops for Ban. The narrative explores themes of unrequited love, self-discovery, and the complexities of relationships, as Yakko navigates her emotions and the challenges posed by both suitors. Ban's troubled past and his struggles with his identity as a musician add depth to his character, while Go's seemingly perfect exterior hides his own vulnerabilities and insecurities.

The series delves into the dynamics of friendship, rivalry, and personal growth, with supporting characters such as Yakko's best friend, Moko, and Ban's bandmates contributing to the unfolding drama. Moko provides comic relief and emotional support, while Ban's interactions with his band reveal his dedication to music and his desire to escape his troubled past. The story balances lighthearted moments with more serious undertones, particularly as Yakko grapples with her feelings and the consequences of her choices.

As the love triangle intensifies, Yakko must confront her own fears and insecurities, ultimately learning to understand her heart and make decisions that align with her true desires. The series concludes with a resolution that reflects the characters' growth and the evolving nature of their relationships, offering a satisfying conclusion to the emotional journey. "Ai Shite Night" is a blend of romance, comedy, and drama, capturing the turbulence of adolescence and the complexities of love.