Mililani product Christian Lee beat Shinya Aoki to secure the ONE Championship lightweight title belt.
Lee put an end to the fight in the second round, with a knockout after delivering a barrage of punches Aoki couldn't defend.
At just 20 years old, Lee joins older sister Angela as a world champion.
Lee was almost finished by the defending champion, Aoki in the first round but escaped an armbar and went on to win.
Lee's record now moves to 11-3 and has a three fight winning streak.