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Kokoro, a sharp-witted girl who loves psychology, uses her skills to solve mysteries at various schools, diving into cases like thefts and stalking incidents with a keen eye for human behavior. Known as the “psychological investigator,” she infiltrates student life, uncovering hidden truths while keeping her identity a secret. As Kokoro navigates these challenges with her unique blend of insight and determination, this engaging tale blends mystery, psychology, and youthful curiosity, following a clever girl’s journey to unravel the complexities of the mind and the secrets lurking within school walls.