u/Competitive_Move9643

I finished the anime a while ago and finally decided to read the Novel and i have a question about Shins Charakter(I started at book 4). In the Anime he was like the calm quiet guy that has inside a heart. In the Novel hes to, but he fells more like a human. So my Question, is this a real difference or am i just missing something in the Anime, or is it because Lena is now there.