I just wanted to read "Unholyverse" but I can't see it on iBooks so I uploaded it here. All credit goes to Bexless on ao3

Moony. Wormtail. Padfoot. Prongs. Their adventures were the stuff of Hogwarts legend. But there are untold stories, stories that only the four of them know. Come along and discover the true tale of the Marauders of Hogwarts... #Wattys2016

This second book of the Divergent Trilogy, but written entirely from Tobias's perspective instead of Tris's. Remember all those times you were wondering what Tobias could've possibly been thinking during Insurgent? No need to wonder! All you need to do is read this story!