"Don't ask why I left the army, it's a long and boring story."

Kain is quite a laid back guy, but in the past he used to act completely differently, being very driven and strong-willed as back then he was actually in the army. Nobody but Kain knows what caused this change in personality between then and now, other than the fact that it was the main reason why he was eventually made to end his service, and that it also made his aquaphobia, that he innately had as a alkali metal, worse than it already was.