...well, yes, of course it was...

[...he pauses, looking a bit uncomfortable with that admission-he should have been more realistic about it from the start instead of falling for her like a goddamned schoolboy, but if he was happy with it, then-]

...she told me she wanted to leave and travel on her own, and proceeded to do so without really explaining why. I was too shocked to stop her, so I tried to call her the following morning-but as I previously said, she was gone that day.

[...a part of him had assumed that it was because he was missing a good portion of what had made him exceptional back in their world, which didn't really make him feel much better about his state here, but that's not an insecurity he feels that he can reveal to another mage. ...the fact that he has developed insecurities of all things in the first place is extremely bizarre and unfitting of him in the first place... even though he's on good terms with Tokiomi and he assumes he probably has the same feelings about the whole thing, it would certainly go even further against his pride to actually admit it.]

So I really didn't have the foggiest idea of what it was about until fairly recently...