The opening round was a good one for the defending champion however the challenger proved she wasn't there to make up the numbers and took the second round. The aggression of Arase seemed to make Akitaya step up and she took rounds 3 and 4 as she began to get a foot hold in the contest.
Up by 2 points on all 3 cards after 4 rounds the fight looked to be going Akitaya's way but then Arase managed to find her feet and seemed to do enough to take the round and begin to make Akitaya show some doubt.
Unfortunately in roudn 6 the two fighters clashed heads and Akitaya suffered a nasty looking cut over the right eye. That cut would pass the first doctor's inspection, but a second look at it forced the doctor to stop the fight. That saw us go to the score-cards which all favoured Akitaya, with scores 58-56, and 58-57, twice, to let her retain her title and record her first defense.
(Image courtesy of boxmob.jp)