The full name is "FFF group of heterodox interrogation society". From the light novel Idiot, Test, Call Animals. FFF Group is a heresy trial organization initiated by Class F, Grade Two, Private Wenyue College. The president is Sugawa Ryou of Class F, wearing a black robe (actually a cloak and hood) and an F on his mask.

Because there are too few girls in the class and they are not welcomed by the opposite sex, they collectively formed the FFF group, which exists as a trial court among middle school students in Wen Yue College. Whenever they receive reports and complaints from other students in the school, they will hold a meeting for interrogation or sentencing. At the same time, it has developed rapidly. From the beginning of class 2-F to the end of the whole grade, 60% of boys joined (and still growing). At the same time, there is a salary reward system for members of the group (sponsored by the silent chamber of commerce) (photos of Xiao Ming and Xiu Ji).

The doctrine itself is to get happiness together, so no one will be allowed to get happiness alone. Therefore, once there is a blasphemer, regardless of the wishes of others, who makes intimate moves in front of everyone, the man will be tried (the woman will be condemned). Support the explanation of the heretical suspect. If it is proved that it is not heresy, then FFF Group will not attack it.