"Jitsu wa Watashi wa" centers on Asahi Kuromine, a high school student with a tendency to blurt out his thoughts uncontrollably. His life takes a dramatic turn when he discovers that his classmate, Youko Shiragami, is a vampire. Despite her intimidating appearance and supernatural nature, Youko is surprisingly kind-hearted and harbors a secret desire to live a normal human life. Asahi, unable to keep her secret due to his inability to lie, becomes entangled in her world, vowing to protect her identity.

The series unfolds as a comedic supernatural romance, blending slice-of-life elements with fantastical occurrences. Asahi’s promise to keep Youko’s secret leads to a series of chaotic and humorous situations, as more supernatural beings are introduced into their lives. These include a half-human, half-wolf girl named Akane Koumoto; a demon girl named Mikan Akemi; and a time-traveling alien named Nagisa Aizawa. Each character brings their own quirks and challenges, further complicating Asahi’s efforts to maintain normalcy.

As the story progresses, the relationships between the characters deepen, with romantic tensions and misunderstandings driving much of the narrative. Asahi’s growing feelings for Youko are juxtaposed with the affections of other characters, creating a dynamic and often comedic love polygon. The series balances its comedic tone with moments of heartfelt emotion, particularly as the characters confront their insecurities and desires.

Themes of acceptance, identity, and the struggle to belong are woven throughout the narrative. Youko’s longing to fit into human society mirrors the struggles of other supernatural characters, who grapple with their dual natures and the expectations placed upon them. Asahi’s unwavering support for Youko and his friends highlights the importance of loyalty and understanding in overcoming personal and societal challenges.

The plot is driven by episodic adventures and overarching character development, with a focus on the evolving relationships between the main cast. The series concludes with a resolution that ties together the romantic and supernatural elements, providing closure to the characters’ journeys while maintaining its lighthearted and comedic tone.