Perverted Investigation / Seisai

A terrible tragedy struck Nankai Academy. The beloved teacher Yuki fell to her death from the roof. The mysterious nature of her death, anxiety, and pain in the hearts of student admirers led to the formation of a private investigation. Four students - Masaeshi, Daisuke, Mitsurue, and Shinya decided to find the one responsible for the death of their beloved teacher. They find the deceased's diary, and in it an entry on the day of her death contains the names of seven female students of Nankai Academy. They decide to interrogate the girls and punish them accordingly...

 

 Video restored, episodes merged.