Morning Musume.'17 DVD Magazine Vol.91

The 13th-Gen Members make their Debut. Divided into groups, the Members go to school to solve and challenge it's 'Mystery Trials'.

• Mizuki FukumuraCast
• Erina IkutaCast
• Haruna IikuboCast
• Ayumi IshidaCast
• Haruka KudoCast
• Sakura OdaCast
• Haruna OgataCast
• Miki NonakaCast
• Maria MakinoCast
• Akane HagaCast
• Kaede KagaCast
• Reina YokoyamaCast