Boyd and Thomas played a big hand in the fightback. They provided a penetrative and regular threat to the Japanese defenders.
All Whites captain Glen Moss saw enough from his young charges over the balance of the 90 minutes against the Samurai Blue to like the look of the future.
"Both debutants were awesome tonight and they played with such confidence," Moss said. "It's a hell of an atmosphere to come into for your first game and they did really well and can be proud of themselves."
In Cyprus, the Football Ferns will be lamenting missed opportunities. It was 0-0 at halftime, after both teams had good spells of possession and chances in front of goal.
The 16th-ranked Kiwis had a number of chances in the second half over 33rd-ranked Ireland, with Betsy Hassett and Sarah Gregorius having opportunities in front of goal.
Ireland's Aine O'Gorman scored in the 64th minute and it was only in the 87th minute that Hannah Wilkinson got on the end of a long ball into the box to level.
They face Switzerland tomorrow at 4.30am at the same venue, Tasos Marko Stadium, in Paralimni.