Jewels

Jewels, styled JEWELS in capital letters, was a Japanese mixed martial arts promotion focused primarily on female fighters. It was created as the successor to Smackgirl after that organization encountered serious financial and operational difficulties. Rather than preserve the Smackgirl name, the new owners pursued a relaunch intended to establish a separate identity and distance the promotion from the problems associated with its predecessor. The organization was formed under Marverous Japan Co., Ltd., an event-production company established by Yuichi Ozono, an executive connected with Archery Inc. Marverous Japan acquired assets and rights formerly associated with Kilgore, the parent company of Smackgirl. The transition gave Jewels access to an existing female-fighter roster, event infrastructure, and championship heritage while allowing the promotion to reposition itself in the Japanese MMA market. Jewels operated in a Japanese combat-sports environment that included several relationships with the Deep promotion. Shigeru Saeki, the head of Deep, served as a supervisor of Jewels and helped connect the two organizations. Their relationship provided opportunities for shared personnel, event cooperation, and continuity between the broader Deep ecosystem and Jewels' women-focused programming. Jewels presented events and championship competitions across multiple weight classes, including atomweight, strawweight, flyweight, bantamweight, and featherweight divisions. Some divisions changed names or weight classifications over time. A significant international development came in June 2012, when Jewels announced a strategic partnership with the United States-based Invicta Fighting Championships. The agreement was intended to support cross-promotion and the movement of leading female fighters between events in Japan and the United States. It reflected the growing international profile of women's MMA and positioned Jewels as part of a wider network of women-focused promotions. Jewels ceased operating as an independent company in 2013. On May 25 of that year, the promotion announced that Ozono would step down from his leadership role and that Saeki would assume full direction. The fighters and promotional identity were transferred into Deep Jewels, which was managed within the Deep organization. Accordingly, Jewels is best understood as a predecessor brand within the Deep women's MMA lineage rather than as an active standalone promotion. Its historical importance lies in maintaining and developing a dedicated platform for female MMA competitors in Japan during the transition from Smackgirl to Deep Jewels.

Jewels emerged from the collapse of the earlier Japanese women's MMA promotion Smackgirl. Smackgirl had suffered substantial difficulties after unexpected losses of major sponsors and television-network relationships. Those problems damaged the promotion's reputation and weakened its financial position. In response, Yuichi Ozono, an executive associated with the event-production company Archery Inc., established Marverous Japan Co., Ltd. Marverous Japan acquired assets and rights formerly held by Kilgore, Smackgirl's parent company. The new organization was deliberately launched under the Jewels name rather than continuing with the Smackgirl identity. This naming decision allowed the promotion to retain elements of the previous operation while signaling a fresh start. Jewels concentrated on female MMA athletes and became a significant Japanese platform for women competing across several weight classes. Its activity included regular events, championship bouts, and tournaments designed to identify contenders and titleholders. Jewels developed a working relationship with Deep, another Japanese MMA promotion led by Shigeru Saeki. Saeki served as Jewels' supervisor, creating an institutional connection between the two organizations. The relationship helped Jewels draw on the wider Deep network while preserving its own women-focused promotional identity. Championship structures covered divisions including featherweight, bantamweight, flyweight, strawweight, and atomweight. Certain divisions were renamed or reclassified during the promotion's history; for example, the bantamweight championship had previously been described as a middleweight title, while the strawweight and atomweight divisions also used earlier labels. On June 9, 2012, Jewels announced a strategic partnership with Invicta Fighting Championships, an American promotion devoted to women's MMA. The arrangement was intended to facilitate cross-promotion and provide opportunities for leading female fighters to appear on cards in Japan and the United States. It connected Jewels to the expanding international women's MMA scene and gave its athletes a route toward broader exposure. Jewels' independent existence ended in 2013. On May 25, the organization announced that Ozono, then its head, would step down and that Saeki would take complete control. The promotion's fighters and image were transferred to a new Deep Jewels brand managed by Deep. This organizational change made Deep Jewels the continuation of Jewels' competitive and promotional activities. Jewels therefore remains historically relevant as a bridge between Smackgirl and Deep Jewels, but it is no longer an active standalone organization.

• 2013

  Transition into Deep Jewels

  [1]Jewels (mixed martial arts)en.wikipedia.org

  Jewels stopped operating independently, with leadership passing from Yuichi Ozono to Shigeru Saeki and the promotion's fighters and identity moving to Deep Jewels.

• 2012

  Strategic partnership with Invicta Fighting Championships

  [1]Jewels (mixed martial arts)en.wikipedia.org

  Jewels announced a partnership with Invicta Fighting Championships to support cross-promotion between Japan and the United States.

• Marverous Japan establishes Jewels as a successor to Smackgirl

  [1]Jewels (mixed martial arts)en.wikipedia.org

  Marverous Japan acquired assets and rights associated with Smackgirl's parent company and launched Jewels as a new identity after Smackgirl's financial and reputational problems.

A Japan-based mixed martial arts promotion specializing in women's competition and operating within the wider Deep promotional network.

• Live sports events

  JEWELS MMA events

  Live mixed martial arts cards centered on female fighters. Events served as the principal vehicle for Jewels' athlete development, matchmaking, championship competition, and promotion of the organization within Japan's MMA market.

• Sports championships

  JEWELS championships

  A set of weight-class championships covering divisions such as featherweight, bantamweight, flyweight, strawweight, and atomweight. Division names and classifications changed during the organization's history, and the titles were later associated with the Deep Jewels lineage.

• Combat-sports tournaments

  JEWELS tournaments

  Tournament formats used to determine contenders and champions in selected women's MMA divisions. These competitions formed part of Jewels' sporting structure alongside individual title bouts.

• 2012Invicta Fighting Championships strategic partnership

  Japan · United States

  Jewels partnered with Invicta Fighting Championships to create a cross-promotional relationship linking women's MMA events and fighters in Japan and the United States.

  Outcome. The partnership expanded Jewels' international connections, although the available source does not provide detailed performance or commercial results.

  Source

• 2013

  End independent operations and transfer the brand to Deep JewelsStrategy

  Background

  Jewels operated in close association with Deep, whose supervisor Shigeru Saeki was already involved in the promotion.

  Action taken

  Jewels ceased operating as an independent company, Ozono stepped down, Saeki assumed full direction, and the fighters and promotional image were transferred to Deep Jewels.

  Aftermath

  Deep Jewels became the continuation of Jewels' women's MMA activities within the Deep organization.

  Source

• 2012

  Form a strategic relationship with Invicta Fighting ChampionshipsM&A

  Background

  Both promotions focused on women's MMA and operated in markets where international fighter exchanges could increase visibility.

  Action taken

  Jewels announced a cross-promotional partnership with Invicta Fighting Championships covering Japan and the United States.

  Aftermath

  The arrangement connected Jewels with a prominent American women's MMA promotion and supported international promotion of female fighters.

  Source

• Launch a new brand after Smackgirl's difficultiesStrategy

  Background

  Smackgirl had faced financial problems after losing important sponsors and television-network relationships, and its reputation had been damaged by the resulting turmoil.

  Action taken

  Marverous Japan acquired relevant assets and rights and established Jewels as a separate identity rather than continuing under the Smackgirl name.

  Aftermath

  Jewels became the new women-focused MMA promotion and later served as the predecessor to Deep Jewels.

  Source

1. 1Jewels (mixed martial arts)en.wikipedia.org
2. 2JEWELS official websitew-jewels.jp