DBLD-001 Kanou Hana: Lolita Schoolgirl Undercover Investigation – Humiliation in the Invaded Territory, SM Entertainment

A girl's high school has been hit by a student disappearance case. While suspicion points to a suspicious homeroom teacher,佐々木, no concrete evidence has been found yet. As a result, Sizuka Kandori, an officer from the police headquarters' special investigation team, goes undercover as a student to infiltrate the school. Despite being mistaken for younger due to her petite appearance, she manages to blend in. She gathers intelligence from her classmates and closes in on the core of the investigation. But what she discovers there is…