Its the MC asking about his mentor whereabouts not asking the mentor directly. The bits is still in the storyline. But as you answered already what's the point of playing the game now that the premise of the game *poof* is gone or buried in a lots of details. But I uninstalled the game cause its too big of a content, that it bores me now.
Erm, well... finding the mentor isn't the premise of the game. I think that's the main issue here. So, yeah, if you were looking for a game about finding your mentor, this isn't it.
And even if it were the premise of the game, if it happened immediately before the rest of the game happened, I imagine that would make for an extremely boring game.