Having scored the winning goal in their Asian Cup triumph last month, the young forward was back at her best once again at Lumen Field in Seattle as her strike proved to be the difference on the night.
Picking up the ball on the far right of the box, Maika cut inside on to her left and from a tight angle, she lifted her effort over goalkeeper Phallon Tullis-Joyce and into the roof of the net.
That made it four goals in her last five games for her nation, taking her tally to 10 in total in 32 caps.
Maika went on to complete 59 minutes before making way for Aoba Fujino. Toko Koga was an unused substitute.
Japan conclude their international camp with another international friendly against the USA on Saturday 18 April (kick-off 2am UK) at Dick's Sporting Goods Park in Colorado.