As someone says earlier all imgur link are randomly generated , so don't bother looking into a "secret meaning" just because one of them vaguely look like "discipline" . 
	And are you all familiar with Occam's razor ? Sometimes the easiest answer is the right one . In this case the second page being the last ( I mean , the page litteraly tell us the game is over ) and the number 9 being a countdown of sort ( since someone pointed out that the imgur for it was created exactly 24h after the post ) .  
	I see all those far -fetched theory with the twoo or the smile but haven't you all  just considered it's there just for the "spooky" feels ? 
	Sorry for killing the vibe but this guessing game seems overcomplicated for me. 
	edit : missinge word and spelling