Career
On July 2009, Suntory Sunbirds announced that Koshikawa will move to Pallavolo Padova next season. On July 2012, Suntory Sunbirds announced her joinning next season. Senior 2004 World League – 10th place 2005 World League – 10th place 2005 World Grand Champions Cup – 4th place 2005 Asian Championship – Gold Medal 2006 World League – 13th place 2006 World Championshis – 8th place 2006 Asian Games – 5th place 2007 World League – 13th place 2007 World Cup – 9th place 2007 Asian Championship – Silver medal 2008 World League – 6th place 2008 Summer Olympics – 11th place 2010 World Championshis – 13th place 2011 World League – 15th place 2011 Asian Championship – 5th place 2013 World League – 18th place 2013 World Grand Champions Cup – 6th place 2013 Asian Championship – 4th place 2014 World League – 19th place 2014 Asian Games – Silver medal.