"Level-C" is a short anime series that blends elements of comedy, romance, and supernatural themes. The narrative centers around Yuka, a high school girl who discovers that her classmate, Chitose, is a male idol in disguise. Chitose, who goes by the stage name "Chiaki," is part of a popular idol group but hides his true identity to lead a normal school life. Yuka accidentally uncovers his secret and becomes entangled in his double life, leading to a series of comedic and dramatic situations.

The plot explores the challenges Chitose faces in balancing his idol career with his desire for a typical high school experience. Yuka, initially reluctant to get involved, gradually becomes a confidante and support system for Chitose. Their relationship evolves as they navigate the complexities of fame, secrecy, and personal identity. The series also delves into the dynamics of Chitose's idol group, highlighting the pressures and expectations placed on young performers in the entertainment industry.

Supporting characters include Chitose's fellow group members, each with distinct personalities and struggles, as well as Yuka's friends, who add layers to the school life setting. The interactions between these characters drive much of the humor and emotional depth of the series. Themes of trust, self-discovery, and the pursuit of dreams are woven throughout the narrative, creating a balance between lighthearted moments and more introspective scenes.

"Level-C" is structured as a series of episodic vignettes, with each episode contributing to the overarching story of Chitose and Yuka's evolving relationship. The anime maintains a brisk pace, focusing on character-driven humor and situational comedy while occasionally touching on the more serious aspects of idol culture and personal growth. The blend of genres and the focus on character dynamics make it a distinctive entry in the slice-of-life and idol anime categories.