After the end of the TV series, the title of "Detective Class" was made in the form of diary. Published by Toei on February 14, 1987. This is the first film adaptation of the famous Detective Sukban series. There is also the role of the third TV series "Sukeban Detective III Girl Ninpocho Denki" on the air, and the topic of co-starring Saki 2nd (Yoko) and Saki 3rd (clothes between the wind) is also very hot. In the second half of the script, the second generation of Saki uses "Ultimate Yoyo", which is 4 times heavier and 16 times more destructive (characterized by holding the left wrist with the right hand and throwing it with great reaction. Wear a protector on the right, and the yo-yo will spin like a drill bit. Because of the characteristics of yo-yo weapons, the use of a double-edged sword is a bright spot, which brings a heavy burden to users and fights against powerful enemies while being hurt by themselves. In addition, the chief of Hattori was identified as a cyborg and was deprived in combat.