Arthur admits his move to Barcelona is a "dream come true".
The former midfielder joined Barca from Gremio last summer.
Arthur said, "My presentation at the Nou Camp? It's a dream come true to be able to wear the shirt of Barça. It was a magical moment that I will never forget.
"When I entered the pitch, I saw that it was gigantic, and I was surprised by its size. My integration? I think I fit well.
"It's hard to get to a place you do not know. It's complicated, but everyone has received me very well. The fact of having other Brazilian players has facilitated my mastery of the language."