Twenty-odd years ago, how old was Chu Tianjiao at the time? He couldn't have been much older than Chu Zihang is now.
If Chu Tianjiao had graduated from Cassel College back then, given his abilities, within a few years of graduation he should have become the most exceptional and elite agent in the Operations Division, and the missions he carried out back then surely would have been top-tier, ace-level assignments for the division.
Yet here is where the contradiction arises, because Chu Tianjiao explicitly stated that he was tracking Odin's whereabouts back then, a matter that continues right up to the present day, more than twenty years later... and yet Cassel College knows absolutely nothing about this matter; the college is completely unaware of Odin's existence.
Chapter 1060