Retry life, reincarnation A problematic work that plays with an overly radical view of life and death and a rebellious spirit. "Aftertau" is a work that opens a new door for Yupsylon by commissioning Kou and rins of Bokaro P to produce it. With the theme of redoing life and reincarnation, "after Y" means new life and "after you" (life) Please go ahead! I'll die later than you! It is sung about the radical view of life and death and the spirit of rebellion.