Nakajima began training professional wrestling with the Major Girl's Fighting AtoZ promotion at the age of 16 in 2005 and made her debut on January 3, 2006, facing fellow rookie Mika Mizunuma in Korakuen Hall.

[11] While still affiliated with AtoZ, Nakajima made her debut for JWP Joshi Puroresu on April 30, 2006, when she faced Kaori Yoneyama in a losing effort.

[20] On November 26, Nakajima entered a tournament for the vacant JWP Junior Championship, defeating Hanako Kobayashi in her first round match.

[24] Before the end of the year, Nakajima made her first successful defense of her newly won title, when she defeated Mai Ichii at a NEO Japan Ladies Pro Wrestling event on December 31.

[25] On April 8, 2007, Nakajima entered the Discover New Heroine Tag Tournament, teaming with JWP Openweight Champion Azumi Hyuga.

In their first round match, Nakajima and Hyuga defeated the NEO Japan Ladies Pro Wrestling duo of Nagisa Nozaki and Yuki Miyazaki.

[26] On April 15, Nakajima and Hyuga first defeated Ayumi Kurihara and Yoshiko Tamura, also representing NEO, in their second round match and then the Passion Red team of Nanae Takahashi and Natsuki☆Taiyo in the semifinals.

[27] The loss led to a match on April 29 in Aya Yuki's home promotion, NEO Japan Ladies Pro Wrestling, where Nakajima successfully defended the JWP Junior Championship against her.

[31] During the second half of 2007, Nakajima started an interpromotional storyline rivalry with Sendai Girls' Pro Wrestling's Tyrannosaurus Okuda.

[38] Nakajima made her first title defense on October 12, defeating Sendai Girls' Pro Wrestling representative Ryo Mizunami.

[43] On May 31, Nakajima officially quit JWP and three days later announced her retirement from professional wrestling, however, keeping the door open for a possible return down the road.

[48] On June 24, Nakajima and Katsu made their debuts for the Reina X World promotion, losing to La Malcriada and Zeuxis in the main event of the evening.

[58] On October 7, the JWP Seikigun, represented by Nakajima, Bolshoi, Kayoko Haruyama and Manami Katsu, were defeated in an eight-woman captain's fall elimination tag team main event by Emi Sakura's and Kaori Yoneyama's new Heart Move Kei Reform (HMK) stable, which in addition to the two also included Hanako Nakamori and Morii.

[60][61] Following the main event, where HMK member Emi Sakura captured the JWP Openweight Championship from Kayoko Haruyama, Nakajima entered the ring and made a challenge for the title.

[64][65] En route to the title match, Nakajima was pinned for the win by Kaori Yoneyama in an eight-woman captain's fall elimination tag team main event between JWP and HMK on December 2.

[66][67] On December 24, Nakajima capped off her return year by defeating Emi Sakura to win the JWP Openweight Championship for the first time.

[76] On February 17, Nakajima made her first successful defense of the JWP Openweight Championship against Kayoko Haruyama, avenging the pinfall loss from the tag team title match.

[93][94][95] Nakajima finished her round-robin block on June 19 with a record of two wins, three draws and one loss, suffered against Mio Shirai, and advanced to the knockout stage.

[103][104] Following the loss of her title, Nakajima began portraying a darker, brooding persona and while she talked about a possible rematch with Kana, she went on a losing streak against Kazuki and Leon.

[138][139][140] Nakajima continued her reign with successful title defenses against Sendai Girls' Pro Wrestling representative Dash Chisako on July 13,[141][142] Leon on September 15,[143][144] and Hanako Nakamori on October 26.

[145][146] Fujimoto later answered Nakajima with a nomination of her own,[147] leading to JWP and Ice Ribbon announcing a double title match for December 28 at Korakuen Hall.

[151] On November 20, Nakajima and Kana first defeated Eri and Haruka Kato and then Lin Byron and Syuri to win the tournament and become the new champions.

[159][160] On April 5, Nakajima's sixteen-month reign as the JWP Openweight Champion came to an end, when she was defeated by Kayoko Haruyama in her seventh title defense.

[178][179] After four successful title defenses, Best Friends lost the International Ribbon Tag Team Championship to Hiiragi Kurumi and Tsukushi on September 19.

[185][186] On January 26, 2017, Nakajima wrestled her first match as a freelancer for Seadlinnng, losing to the promotion's founder Nanae Takahashi in the main event.

[187][188] On October 3, 2018, Nakajima participated in an eight-woman single-elimination tournament to crown the inaugural Beyond the Sea Single Champion,[189] as she advanced to the finals where she was defeated by Takahashi on November 1.

[190] On December 13, Nakajima, alongside Ayame Sasamura, defeated Borderless (Rina Yamashita and Yoshiko) to win the Beyond the Sea Tag Team Championship.

[192] On March 20, Nakajima and Sae defeated Himeka Arita and Miyuki Takase to win the vacant Beyond the Sea Tag Team Championship.

[197] On October 3, Best Friends won the Beyond the Sea Tag Team Championship, when Fujimoto and Nakajima defeated Hiroyo Matsumoto and Yoshiko.

In December 2015, Nakajima and Tsukasa Fujimoto released a cover of Rebecca's song Friends, which was also their entrance theme as a tag team.