In 1999, Kaneko won the All-Japan Amateur Shooto Championships in the women's flyweight and also the bantamweight divisions of East Japan. In 2000, she conquered the Central Japan Amateur Shooto Championships in the featherweight division. In 1999 Kaneko was the runner-up in the Real Fighting Karate-do Championships, repeating this feat in 2000. From 2001 to 2003 she won the Real Fighting Karate-do Championships and was the runner up in 2004. In 2009 and 2010 Kaneko was the runner up of the All-Japan Real Fighting Karate Championships -52 kg, being defeated in the final both times by Saori Ishioka.
Kaneko made her MMA debut on at Club Fight Round 1 where she was defeated by Japanese women's MMA pioneer Yoko Takahashi via submission. At Smackgirl: Episode 0 on, Kaneko defeated Miwako Ishihara in 36 seconds with an armbar submission. Kaneko got her second submission loss against Ikuma Hoshino, who defeated Kaneko with a guillotine choke on at Smackgirl: Indeed. At Smackgirl: Burning Night on Kaneko defeated Mika Harigai with an armbar submission in the first round. On, Kaneko was knocked out with knees in the first round by at the time debutant Izumi Noguchi at Ax Vol. 2: we want to shine. Kaneko rebounded with an armbar submission victory over Naoko Torashima at Smackgirl: God Bless You on. Kaneko was defeated again by a MMA debutant when she faced Tomomi Sunaba, who won by split decision on at Smackgirl: Golden Gate 2002. On at Smackgirl: Summer Gate 2002 Kaneko defeated kickboxerHisae Watanabe by armbar submission in the second round. Kaneko got another win on at Smackgirl: Japan Cup 2002 Opening Round, where she defeated Aya Koyama by unanimous decision during the first round of the middleweight tournament. At Smackgirl: Japan Cup 2002 Episode 2 on during the semi-finals of the middleweight tournament, Kaneko was able to avenge her previous defeat at the hands of Tomomi Sunaba, defeating Sunaba this time by unanimous decision and advancing to the final. On at Smackgirl: Japan Cup 2002 Grand Final, Kaneko faced MMA star Yuka Tsuji, who defeated Kaneko by unanimous decision in the final of the middleweight tournament. At the event Arkadia held in Hakuba, Nagano, Kaneko defeated Keiko Matsukawa via armbar submission in the first round on. In a rematch of their 2001, Kaneko and Izumi Noguchi fought at the event Smackgirl: Third Season V on, with Noguchi winning the bout by unanimous decision. On, Kaneko participated in the event Golden Muscle Women's MMA: Strongest Queen Tournament where she defeated Asami Kodera via submission in the first round of the tournament, actress, pro-wrestler and race queen Mizuho Ishikawa via submission in the semi-finals before finally losing the final against Hisae Watanabe, whom Kaneko had defeated in 2002, via unanimous decision. At Deep 18th Impact on, Kaneko tied with Satoko Shinashi, the second women at the time to get a draw against the then unbeaten Shinashi. Kaneko and Satoko Shinashi had an immediate rematch at Deep 19th Impact on in which Shinashi defeated Kaneko by unanimous decision. This was also Kaneko retirement match from MMA. After returning to karate competitions, Kaneko also returned to MMA on at Jewels 6th ring, defeating Abe Ani Combat Club member Rina Tomita by unanimous decision after dominating the fight despite her four-year absence.
MMA tag matches
Kaneko participated in three MMA tag matches in a one-day tournament at Smackgirl: Strongest Tag Tournament 2002 on in which she was partnered with Miwako Ishihara and both defeated Yoko Takahashi and Hisae Watanebe in the first round, Aya Koyama and Hikaru Shinohara in the semi-finals, and Naoko Torashima and Kazue Terui in the final to win the tournament.
