Talk:5th Layer/@comment-2A02:8071:91B2:5300:4CB2:1820:B7AA:4D29-20200202053859

 In chapter 7, pages 15–16, Shiggy, while talking about the different layers, says, "Anyway, we're finally on to the fourth layer! Only Black Whistles and above can go here. [emphasis in original]" and "The fifth layer! This is the domain of White Whistles alone[.]" 

But Bondrewd himself said he made it possible for black whistle to be allowed in the 5th layer. From the time it is a while from the date Shiggy told that.