The Gunners are preparing to play Japanese side Nagoya Grampus on Monday, and Miyaichi has admitted that he is excited to play in front of his home crowd.
The 20-year-old told the club's official website: "I've thought about it a lot. I've really been looking forward to coming back here since I heard about the tour last year.
"When we arrived at the airport, some of the fans were at the airport. I haven't met with family or friends yet but I went to a signing session and it was good to see Japanese people and Japanese fans.
"At Nagoya Grampus now, they have a very good calibre of players and I'm looking forward to playing against them on Monday. I will try to do my best and try to show them my speed, stamina and good play."
The Japan international made his return from injury during the club's 7-1 victory over Vietnam on Wednesday.