@KeiosKod you nailed it.
Notice how Kraft's statue portrays him as a warrior, with his companion being the one wearing the amulet of the Goddess.
He reached his pinnacle when his battle was to save no less than the world. His achievements were then lost in time and he suffered the same fate as everyone else: they fell into oblivion.
We can assume that this is when and how Kraft became a monk, meditation was probably the best way for him to deal with vanity.
What I like is the way the author can draw so little and yet with so much depth.