He just didn't appear on many photos with them. He was like always far away from them. I don't want to think that the team treats Yuzu badly, I'm just worried about him. He's appeared on not so many photos while the Japanese team have been having fun together and taking photos together. He was also not with them during the closing ceremony of Olympics. He walked along with old doctor though I think it was because of such important reason as respect towards old man. Aslo, I've seen the photo where all skaters stood together but without Hanyu-san. I remember the fact that Daisuke's not admitted Yuzu's wins over him for a long time.
I must say that I also noticed it, especially some years ago... apart from kanako he didn't seem really close to anyone else, but in the last two years it seemed to change IMO, like I saw all the member of team japan interact with him way more often during competition, etc... I'm probably just over-thinking this, but maybe it was something along the lines of the new kid who is VERY competitive (something nearly anyone said about him) and much younger ( and that never helps) and that came in an already strong and well balanced group? anyway I think that even if this was real and not just something that my mind made up, I would say that it has changed and we shouldn't worry about it

And I'd like to ask you for some help so I could understand Yuzuru and his behaviour better.

It's so magical for me.
As long as he gets the job done I for one couldn't care less if his personality is "fake" or not. Hanyu is about to skate his short program in less than a day and yet we fans are fixated on defending his personality.....
poor Yuzu, he is still a kid, hasn't passed the coming of age day in Japan and now people are discussing his personality. He is an athlete not some idol. He does not sell character, all he does is skate. But I guess that is the price of the gold medal. Too much expectation and now it's his personality into the spot line. I think we should pay more attention to his skating. I do believe he will do well no matter what, the kid has a strong will, he can do that.