Maybe its also due to memory lost. Being insecure on yourself. Having self doubts or question. I'm not good with this type that's related to one's own mentallity of thinking. But if you ask me. When I don't have any memory or what so ever clue of my past. I will try to make a "space" on the others. Some self defence mechanism. WHen he first saw his father after memory lost. His also at lost on what to do. And when his meeting people of his past. His also at lost and thinking on a way on how to approach. When he first met someone he knew from the past. Which turn out to be styl. His first approach is to show respect but back fired with a fire sword
. Then he tried to be friendly with Misha that also backfired with a chainsaw on his neck. Then after that he just tried to create a space between himself and people around him. Specially to those his close with or seem to be familiar with but still his not showing off guard or something. Hard to explain it.