The 21-year-old striker, who is preparing for the 2016 Rio Olympic Games with Japan, signed with the Gunners from Sanfrecce Hiroshima in early July but has revealed that there was some reluctance prior to putting pen to paper with the Premier League giants.
"I've always wanted to play abroad and I had a few offers before but I was never sure if I should go or not," Asano told FIFA.com.
"Once I was called up for the top national team where there are a lot of players playing abroad. Playing with them made me think that I also want to play and challenge in a foreign league.
"And then I had the offer from Arsenal. Of course, I was still not sure whether to go or not. I talked with my family and friends and felt good about the decision after talking with them.
"My motto is to give 100 per cent for what's ahead of myself, so I just want to give my best to everything, whether it be for the Olympics or the new season. Even for my career after the Olympics, I definitely want to try to make the top national team."