"Chūnibyō demo Koi ga Shitai! Lite" is a short-form anime series that serves as a prequel to the main series "Chūnibyō demo Koi ga Shitai!" (Love, Chunibyo & Other Delusions). The narrative revolves around Yuuta Togashi, a high school student who is trying to leave behind his embarrassing past as a "chūnibyō" sufferer—a condition where individuals, typically adolescents, believe they possess supernatural powers or are destined for extraordinary lives. Yuuta's chūnibyō phase involved him adopting the persona of the "Dark Flame Master," a self-proclaimed wielder of dark powers. After entering high school, he attempts to live a normal life, distancing himself from his former delusions.

The series introduces Rikka Takanashi, a quirky and eccentric girl who still embraces her chūnibyō tendencies. Rikka refers to herself as the "Wielder of the Wicked Eye" and wears an eyepatch, claiming it seals her immense power. Despite Yuuta's efforts to avoid his past, he finds himself drawn to Rikka due to her unabashed commitment to her fantasies. Their interactions form the core of the story, blending humor and lighthearted moments as Yuuta navigates his conflicting feelings about his past and his growing connection with Rikka.

Other characters include Shinka Nibutani, a classmate who also tries to hide her chūnibyō past, and Kumin Tsuyuri, a laid-back upperclassman who often naps during club activities. The series explores themes of adolescence, identity, and the struggle to reconcile one's past with the present. The episodic format of "Chūnibyō demo Koi ga Shitai! Lite" focuses on comedic and slice-of-life scenarios, providing a glimpse into the characters' personalities and relationships before the events of the main series. The tone is light and humorous, with occasional moments of introspection that hint at the deeper emotional undercurrents explored in the full-length series.