About the book: year / Were you rejected by your home world? Got into the Tower of Sin? Rejoice, you are now the Chosen One! Hmm, judging by the four-story mat, you're very happy. Just remember, you have the mark of a creature you don’t want to meet at all. The race against time begins! Become stronger, conquer the Tower, and your wish will be fulfilled. Now choose which type of tower you're in... Oh, Sin of Lust is automatically selected? Well, that's even more interesting!