Miyaichi is eager to make the most of his loan move.
He told the Latics website: "The international break has given me a good chance to get to know my surroundings a bit more.
"It has also been a great chance for me to impress back here at the training ground.
"I have to show the gaffer how ready I am to play and it is a really good time to do that.
"Of course when the players return from their games with their countries I have to continue the same amount of work-rate."