At this time, she started using the name of "Mai Hatsune", the stage name.
In 2002, she participated The 1st Mahjong San Queen Cup, and she came from behind and won the championship.
In August, she participated in the Final of 2002 World Mahjong Championship Women Players Japanese National Team Qualifying tournament in Kanda, Tokyo, but she lost.
On June 25, 2005, she participated the first Open European Mahjong Championship in Nijmegen, Netherlands.
[3] On December 31, 2005, she participated the team competition "Mahjong Battle Royal 2006" promoted by Mondo21.