J5 (Jonouchi Terminal Illness Syndrome)[edit source]
- Main article: J5 (Jonouchi Terminal Illness Syndrome)
J5 (Jonouchi Terminal Illness Syndrome) (J5(城之内症候群末期症状)) is an occurrence when niconico users hallucinate that Jonouchi Yuji is emitting his iconic misheard dialogue in the videos he is in and go psychotic. This is worse when the video is short and repeats Jonouchi's few lines. There is no cure for it. Based on L5.
