Yoshida Akari's school is in chaos and mayhem due to a ruthless bloomer thief. The safety of everyone is at risk. However, the situation turns more serious as her best friend, Hayakawa Maiko, has been missing for three days, and the investigation has not provided any breakthrough. Forced to take matters into her own hands, Akari questions the last person seen with her friend, Student Council President Morishita Natsu. But Morishita dismisses her promptly, citing his involvement in the bloomer incident. The mystery thief remains at large, and the fate of Maiko is unknown.
