I have completed all trainer quests, except for the second one given by Kenneth. As I didn't encounter a conversation option with him, I decided to continue on playing a bit and to return to him later. But still, nothing about a quest!
I've played the game a number of times before, so I didn't mind getting spoiled and read on the internet this quest involves killing Kali. I have already done so. Does this have anything to do with the quest not appearing in-game/with Kenneth?