I've heard stories of those who have played sports over the years and their lifelong knee injuries... I feel like I've seen Ayu wearing knee braces for ten years now, but kudos to her for fighting through that all these years, and finally doing something to help it some by getting that surgery.
What makes me especially sad is that her hearing in her right ear is rapidly getting worse.

She's definitely serious when she says "as long as the fans want me, I'll be there" but she definitely should've thought more into this many performances. She definitely knew about her knee then, and while it seems like she gave it a good amount of time to heal before going into rehearsals, she should've kept this tour smaller...
__________________
♥ Ayu fan since September 2006 ♥
Ayu Concerts I've Attended:
ASIA TOUR 2008 - June 29, 2008
ARENA TOUR 2009 - June 20, 2009 | June 21, 2009
ARENA TOUR 2012 - April 7, 2012 | April 8, 2012