Kyouji at first looks like your typical nice guy archetype being polite, smiling all the time and who is generally known for being nice. This image holds pretty well during the first time you know him but then you start noticing something about him, which would be how he never stops smiling all the time. Kyouji has never be seen upset of sad, he never seems to show any emotion more deep than being nice, this does not means by itself that Kyouji is disturbed but if you compare him with Tetsuya, the other stoic character that never opens his eyes Kyouji lack of emoting becomes more apparent.