Bourbon and Naris Cosmetics Back Rising Tennis Star Honori Koyama

Honori Koyama, a rising force in Japanese women’s professional tennis, has secured significant corporate backing to fuel her ascent on the international circuit. On April 1, 2026, Bourbon Corporation announced the signing of a support contract with Koyama, who is simultaneously entering a main sponsorship agreement with Naris Cosmetics.

The dual-corporate backing represents a strategic investment in a player who has rapidly climbed the ranks of the domestic game. For Koyama, the partnerships provide the necessary infrastructure to navigate the demanding schedule of global professional tours.

From Miki City to the Professional Circuit

Koyama’s journey to the pro ranks is deeply rooted in Miki City, Hyogo Prefecture. Her introduction to the sport occurred in the third grade at the Bourbon Beans Dome, a venue that serves as a symbolic link to her new support sponsor. Her trajectory since then has been marked by consistent excellence at the youth level.

By her first year of middle school, Koyama had already made her debut at the national level. This momentum culminated in 2023 when she captured the title at Japan’s most prestigious junior tournament, officially ranking her as the top junior player in the country. Following this success, Koyama transitioned to the professional ranks in April 2024 and has since been competing in various domestic and international events.

A Community-Driven Sponsorship Model

While the contracts provide individual support for the athlete, the agreement with Naris Cosmetics carries a broader civic objective. The Osaka-based cosmetics company, founded in 1932, has maintained a strong presence in Miki City since the completion of its Hyogo Plant in 1967.

Naris Cosmetics is leveraging this partnership to align with the “Miki City Sports Promotion Vision,” a local initiative aimed at transforming the area into a hub for lifelong sports and tennis. The company intends to sponsor sports events hosted by the city to increase recognition of Miki City as a “tennis town.”

This approach bridges the gap between corporate branding and regional development, using Koyama’s global ambitions as a catalyst for local athletic inspiration.

Corporate Profiles and Strategic Alignment

The two companies bringing Koyama on board operate from different regional hubs but share a commitment to the athlete’s growth:

• Bourbon Corporation: Headquartered in Kashiwazaki City, Niigata Prefecture and led by President Masayoshi Yoshida, the company provides support to Koyama, echoing the athlete’s early start at the company’s namesake dome in Miki City.
• Naris Cosmetics: Based in Fukushima-ku, Osaka City, and led by Representative Hiroyoshi Muraoka, the firm serves as the main sponsor. Their philosophy, “for others,” extends to supporting athletes who challenge themselves on the world stage.

For global readers, this type of corporate structure is common in Japanese sports, where a “main sponsor” often handles the primary financial and administrative burden of a player’s career, while “support sponsors” provide additional resources and targeted branding.

The Road Ahead

With the financial and promotional weight of two major corporations behind her, Koyama is positioned to increase her presence in international tournaments. The transition from a dominant junior player to a consistent professional requires significant travel and training resources, which these contracts are designed to provide.

Koyama’s goal remains clear: to leverage her domestic success and the support of her sponsors to challenge the world’s best players. As she continues to compete globally, her progress will serve as a benchmark for the success of Miki City’s sports promotion efforts.

The next phase of Koyama’s career will involve a rigorous schedule of international tour events as she seeks to climb the WTA rankings. Official updates on her match schedule and tournament appearances are expected via her primary sponsors.

Do you feel localized corporate sponsorship is the best way to develop next-generation tennis talent? Share your thoughts in the comments below.