'If things go bad, then I will stop analyzing and show the real person.' Because that was his intention.
The incident when he went missing in Kien country was caused by none other than the demons that roamed there. Unfortunately he was still silent at the time. To deal with someone who has telepathy, it's best to stay still and think nothing of it.
At first when the young girl was kidnapped, she knew that the Mana she had was going to be sucked by them but, long before being sucked in she had already defeated several demons who had kidnapped her.
Again he tells the story where humans are on the verge of death when they are kidnapped by demons from the point of view of other humans whose fate is unlucky here.
The facts he told were acceptable and not considered lies because he witnessed the torture with his own eyes.