Apart from her Olympic career, Kaneto also demolished both a Japanese and Asian record of 2:20.72 at the Japan University Championships in Kumamoto.

Rie made her international swimming debut at the 2007 Summer Universiade in Bangkok, Thailand, quickly claiming a silver medal in the 200 m breaststroke by less than 0.04 of a second behind South Korea's Jung Seul-ki in 2:25.63.

Leading up to the Games, she placed second behind Megumi Taneda at the Olympic trials in Tokyo with a FINA A-standard entry time of 2:26.28.

[6][7] At the 2009 Summer Universiade in Belgrade, Serbia, Rie set an Asian and Japanese mark of 2:22.32 to claim the 200 m breaststroke title, just a single hundredth margin off her record from the national championships (2:22.33).

[8] In 2010, Rie surprisingly missed out the podium in the 200 m breaststroke at the Asian Games in Guangzhou, China, when she placed fourth behind two Chinese swimmers and new champion Jeong Da-rae of South Korea in 2:25.63.