Avex announced Hamasaki Ayumi will be performing 「Startin'」, theme song for PS2 Shin Onimusha as a musical guest in the final day of E3, Electronic Entertainment Expo, the largest annual trade show, and one of the biggest gaming convention in the world. E3 will be held in May 10 - 12 at Los Angeles Convention Center.

http://www.e3expo.com/
http://www.avexnet.or.jp/ayu/news/060401.html