At 45 years old, Cima has this physical status:
Nobuhiko Oshima, otherwise known as Cima, graduated from the first class of Último Dragón's Toryumon dojo. He quickly became the Toryumon wrestling promotion's biggest star. He first wrestled as Shiima Nobunaga (making a few appearances in WCW under that name), then as Shiima (stylized in all capital letters), until finally shortening his stage name to Cima (also stylized in all capital letters), under which he still wrestles today. He was one of the founders of the Crazy Max stable, and had a years-long feud with Magnum Tokyo, another first class graduate. He began as a high flyer, utilizing the Mad Splash as his finisher. This, however, took a toll on his body and especially his knees. After returning from knee surgery he changed his style and started using the Schwein as his finisher. He wrestled in Toryumon Japan until 2004, when the promotion separated itself from Último Dragón's dojo, and changed its name to Dragon Gate. He created the Blood Generation stable in 2005, which had its final match in January 2007. On July 1, 2007, Cima won Dragon Gate's main title, the Open the Dream Gate Championship, from Jushin Thunder Liger in Kobe, Japan. Cima thus became the first wrestler to hold this title on two occasions.
Some time in May 2008, Cima developed a neck injury. He tried to recuperate from it early as best as he could, but by the end of June, it was becoming obvious that he would need to take considerable time off to rest and heal up properly. On June 29, he vacated the Dream Gate title, just a day shy of a one-year reign as champion. On September 8, 2008, Cima appeared in a non-wrestling role at Dragon Gate's event Dragon Gate Hawaii at the Waikiki Shell, although he got involved in one match accidentally, hitting Stalker Ichikawa with a steel chair. Cima would return to the ring on December 28, 2008, when he teamed with Jushin Thunder Liger in a losing effort to capture the Open the Twin Gate Championship. It was also on this day that his Typhoon unit was brought to an end, after Dragon Kid, Ryo Saito & Susumu Yokosuka lost in a Unit Split Survival Three-Way Six-Man Tag Match to teams from World-1 and Real Hazard. After that, nothing more was heard from him for over a month.
The silence was broken when, on February 9, 2009, before WWE Friday Night SmackDown, he wrestled in a dark match against Jamie Noble in a losing effort. He also wrestled for WPW in California on February 15 in a tag match. On March 1, he made his return to Dragon Gate, and announced the formation of the Warriors-5 stable along with Susumu Yokosuka, Gamma, and Kagetora. The fifth member, Ryoma, was added on the 20th.
Two days later, he defeated Masato Yoshino to become the new Open the Brave Gate Champion. On April 15, he, Gamma, and Kagetora won the Open the Triangle Gate Title from Shingo Takagi, Taku Iwasa, and Dragon Kid. They would eventually lose the belts to Masato Yoshino, BxB Hulk and Pac. He also challenged Open the Dream Gate Champion Naruki Doi to a Title vs. Title Match on July 19, and despite putting up a valiant effort, he lost the Brave Gate to Doi.
He and Gamma then participated in the 2009 Summer Adventure Tag League Tournament, but they performed very poorly, only winning one match out of eight and finishing in last place. On December 29, they won the Open the Twin Gate Title from Shingo Takagi and Yamato, but they immediately handed them back, declaring themselves only tentative champions, and desired to face a strong team to determine the actual champions. On February 10, Cima and Gamma defeated Naruki Doi and Masato Yoshino, officially becoming the Open the Twin Gate Champions. This win made Cima the first man to win every title in Dragon Gate. On March 22, Cima and Gamma lost the title to Takagi and Cyber Kong. On May 13, 2010, Cima, Gamma and Genki Horiguchi defeated Don Fujii, Masaaki Mochizuki and Akebono to win the Open the Triangle Gate Championship. On October 25, 2010, Cima, Gamma and Horiguchi lost the Open the Triangle Gate Championship to Naoki Tanisaki, Yasushi Kanda and Takuya Sugawara. Cima would regain the title on December 26, 2010, teaming with Dragon Kid and Ricochet.
On January 14, 2011, Cima and the Warriors turned heel, revealing themselves as the masked men who had been interfering in matches, and attacking Masato Yoshino and the World–1 group, before joining forces with Naruki Doi's group. On January 18 the new group was named Blood Warriors, a combination of the names of Cima's two previous stables, Blood Generation and Warriors. On May 15, the rest of Blood Warriors turned on Dragon Kid and kicked him out of the group, despite the fact that he still held the Open the Triangle Gate Championship with Cima and Ricochet, and replaced him with Cyber Kong and Tomahawk T.T. As a result, the title was declared vacant. On July 17, Cima and Ricochet defeated Dragon Kid and Pac of rival group Junction Three to win the Open the Twin Gate Championship. On September 11 at Way of the Ronin 2011, Cima and Ricochet defeated Masato Yoshino and Pac in a title vs. title match to win Dragon Gate USA (DGUSA)'s Open the United Gate Championship. After their third successful defense of the Open the Twin Gate Championship on November 30, Cima and Ricochet vacated the title in order for Ricochet to concentrate on defending the Open the Brave Gate Championship and Cima to concentrate on chasing the Open the Dream Gate Championship. On December 25 at Final Gate 2011, Cima defeated Masaaki Mochizuki to win the Open the Dream Gate Championship for the third time. On January 19, 2012, BxB Hulk and Akira Tozawa turned on Cima, causing him to lose a ten-man "Loser Leaves Unit" tag team match; as a result, Cima was kicked out of Blood Warriors.
After fifteen successful defenses and a reign of 574 days, Cima lost the Open the Dream Gate Championship to Shingo Takagi on July 21, 2013. During 2014, Cima won both the Open the Triangle Gate and Open the Twin Gate Championship alongside his Veteran-gun stablemates, but lost both titles in first defense. On December 3, 2014, after losing the Open the Twin Gate Championship, Cima and Gamma were forced into joining the villainous Mad Blankey stable. As part of the stable, Cima made unsuccessful attempts at recapturing the Open the Triangle Gate Championship. Cima remained a part of Mad Blankey until May 5, 2015, when members of the stable turned on him, costing him a six-way steel cage match, as a result of which he was shaved bald. On June 14, he, Don Fujii and Gamma defeated the Jimmyz (Genki Horiguchi H.A.Gee.Mee!!, Jimmy Susumu and Ryo "Jimmy" Saito) to win the Open the Triangle Gate Championship. On October 8, Cima formed a new unit with Eita, Gamma, El Lindaman, Punch Tominaga, and rookies Kaito Ishida and Takehiro Yamamura. On November 1, the unit was named Over Generation. The same day, he, Gamma, and Don Fujii defended the Open the Triangle Gate Championship against the Jimmyz (Jimmy Susumu, Jimmy K-Ness J.K.S., and Ryo "Jimmy" Saito), and vacated the title afterwards. In the summer of 2016, Cima took part in the 2016 King of Gate, finishing with 6 points and failing to advance to the final. Cima teamed up with Gamma once again for the Summer Adventure Tag League, making it to the semi finals where they lost to VerserK (Naruki Doi and Yasshi). On November 3, Cima and Dragon Kid captured the Open The Dream Gate Titles, defeating Jimmy Kagetora and Jimmy Susumu in Osaka. The two held the titles for over a year until they were forced to vacate them due to Dragon Kid suffering an injury. Cima found a new partner in Susumu, but the two were unsuccessful in defeating Eita and T-Hawk for the vacant titles at Final Gate in December 2017.
Cima also made his first appearance in a North American wrestling promotion in about seven years in August 2005, appearing in Ring of Honor in a match against A.J. Styles, who Cima defeated.
Cima would return to North America for a three-day tour with Ring of Honor (ROH). On March 30, 2006, in Detroit, Michigan, Cima teamed with fellow Blood Generation members Naruki Doi and Masato Yoshino to defeat Ring of Honor faction Generation Next, represented by Austin Aries, Roderick Strong, and Jack Evans.
On March 31, 2006, in Chicago, Illinois, Cima would once again team with fellow Blood Generation members Naruki Doi and Masato Yoshino in Ring of Honor, this time losing a match to another stable from Dragon Gate, Do Fixer (Dragon Kid, Ryo Saito, and Genki Horiguchi). Dave Meltzer of The Wrestling Observer gave the match the coveted 5 star rating.
On April 1, 2006, once again in Chicago, Illinois, at the third and final Ring of Honor show, Cima teamed with Naruki Doi in a losing attempt to win the Ring of Honor Tag Title from champions Generation Next (Austin Aries and Roderick Strong).
In September 2006 during the Labor Day Weekend, Cima participated in the Pro Wrestling Guerrilla (PWG) Battle of Los Angeles super tournament. He was able to advance all the way to the finals where he lost to Davey Richards.
Cima's next return to Ring of Honor happened in late December 2006. Cima teamed with Shingo on December 22 in Hartford, Connecticut to challenge Christopher Daniels and Matt Sydal for the ROH World Tag Team Title, but the Japanese stars came up short in the match. The next night, in Manhattan, New York, Cima and Shingo teamed with Matt Sydal to take on the team of Austin Aries, Roderick Strong, and Delirious. This time, they were successful in their outing, when Cima pinned Delirious. After the match, Cima proclaimed "Thank you US, thank you ROH, see you in 2007".
On January 6, 2007, Cima traveled to Australia and competed in the Australasian Wrestling Federation. In the main event, he wrestled the AWF Champion Steve Ravenous and TNT in a three-way elimination match, which Cima won to become the AWF Champion. The next night in Newcastle, TNT defeated Cima for the AWF Title.
On September 2, 2007, Cima won Pro Wrestling Guerrilla's Battle of Los Angeles tournament, defeating Human Tornado, Shingo and Pac on his way to the finals where he eliminated both El Generico and Roderick Strong.
On September 5, 2007, Cima made his debut in Hawaii (along with Dragon Kid, Susumu Yokosuka and Shingo Takagi) for Action Zone Wrestling, losing to AZW Heavyweight Champion Kris Kavanaugh. After the match, Cima thanked the fans and asked if Hawaii enjoyed Dragon Gate, to which the crowd started a loud Dragon Gate chant. He promised Dragon Gate would be back in Hawaii, and in AZW. He returned to AZW on January 7, 2008 at Battleclash III to defeat "Sweet & Sour" Larry Sweeney.
On January 29, 2012, Cima returned to PWG, teaming with Ricochet in a match, where they were defeated by the RockNES Monsters (Johnny Goodtime and Johnny Yuma). On March 30, Cima and Ricochet were forced to vacate the Open the United Gate Championship, after Cima was sidelined with a neck injury. On July 29 at Enter the Dragon 2012, Dragon Gate USA's third anniversary event, Cima and A. R. Fox defeated Rich Swann and Ricochet to win the vacant Open the United Gate Championship. They lost the title to The Young Bucks (Matt Jackson and Nick Jackson) on April 6, 2013. He participated in the 2018 Battle of Los Angeles, making it to the second round where he lost to Joey Janela.
Cima appeared at All Elite Wrestling's Double or Nothing event on May 25, 2019 with StrongHearts stable mates T-Hawk and El Lindaman against SoCal Uncensored.
In early 2018, Cima announced his departure from Dragon Gate after 21 years working for the promotion, and also announced the formation of a new promotion, Oriental Wrestling Entertainment (OWE), to be primarily based in China. T-Hawk, El Lindaman and Takehiro Yamamura also left Dragon Gate to join OWE. At OWE's inaugural event on May 7, Cima defeated T-Hawk. On June 22, representing OWE, he debuted in Wrestle-1, defeating Jun Tonsho. The rest of the OWE roster soon debuted in the promotion too, and named themselves "#StrongHearts", later recruiting Dezmond Xavier and Zachary Wentz to the group. Cima and Strong Hearts also debuted for DDT Pro-Wrestling (DDT) in September, defeating All Out (Konosuke Takeshita, Akito, Shunma Katsumata and Yuki Iino). On October 28, Cima, Duan Yingnan and T-Hawk defeated Damnation (Mad Paulie, Soma Takao and Tetsuya Endo) to win the KO-D 6 Man Tag Team Championship. The group dropped the titles to All Out on January 3. In May 2021, it was announced that Cima, along with El Lindaman and T-Hawk, would be leaving OWE to join Gleat. During the 2022 Wrestle Kingdom 16 event, he participated in the New Japan Pro-Wrestling (NJPW) battle royal match marking his first appearance for the promotion in over a decade.