>>212 JISAKU JIEN - used to refer to the action of pretending to be multiple persons online or the person(s) who do so. Usually easily uncovered by looking at the cryptcode ID of the posts.
>>222 = >>218 The definition written in >>213 seems right. Another example of Jisaku Jien is that you pretend to be involved in a crime though you aren't and get injured by yourself in order to draw sympathy from others.