Shimokozuru was born in
Nagaokakyo on 7 June 1982. In 1999, she joined
Matsushita Electric Panasonic Bambina (later
Speranza FC Takatsuki) from youth team. In 2005, she graduated from
Kansai University and moved to
Tasaki Perule FC. She was selected Best Eleven in
2005,
2006. However, in 2008, the club was disbanded due to financial strain and she retired. In May 2009, she came back at
Speranza FC Takatsuki. In 2010, she moved to
TEPCO Mareeze. However, the club was disbanded for
Fukushima Daiichi nuclear disaster in 2011. She moved to new club
Vegalta Sendai and played as captain. She retired end of 2013 season. ==National team career==