Before we witness the seriesâ climactic showdown in the third volume of the "End Tale"âeach part of which forms its own cohesive wholeânarrator Araragi wrestles with a crucial bit of history that had turned him into the loner we met at the very beginning, who opined that friendships only lowered his intensity as a human. What initiates his pilgrimâs progress of a reckoning is his first encounter, at school, with the mysterious freshman Ogi Oshino, self-described niece of the equally enigmatic aberration expert Mèmè, and the bookâs opening chapter is a harrowing standalone novella of a whodunnit involving a locked room of sorts. Our increasingly well-adjusted hero kept on being decent at one thing even when he was just hanging on, but this forte, an unlikely aptitude for math, of all things, becomes the focus of a cheating scandal and a web of recollections that forces him to come to terms with, what do you know, his capacity to connect to people.