Jōgorō Kobato and Yuki Osanai are two high school students who share a secret pact. After painful experiences in junior high stemming from their own distinctive abilities—Kobato’s habit of over-analyzing everything with his deductive reasoning and Osanai’s tendency to be shunned for her strange behavior—they have resolved to live as perfectly ordinary and inconspicuous citizens throughout their high school years. They enter Funato High School as classmates, agreeing to help each other maintain this low profile and lead a simple, peaceful life. However, their plan is immediately challenged as mysterious incidents and small-scale disasters begin to occur around them. Despite their earnest desire to blend in, Kobato’s sharp detective instincts and Osanai’s keen perception keep pulling them into the heart of everyday mysteries that need solving. The story follows their struggle to remain unnoticed while navigating a series of curious events connected to seasonal sweets, starting with the case of a springtime limited-edition strawberry tart. The narrative arc unfolds through these self-contained yet interconnected mysteries, testing the pair’s resolve to stay ordinary against their natural inclinations to dissect and resolve the puzzles that cross their path.