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Japanese technology company running the C1 human-vs-AI drone racing competition and related unmanned-vehicle businesses.

Last updated September 28, 2026

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Overview

C1 Ltd. (C1株式会社) is a Japanese technology company headquartered in Kashiwa, Chiba Prefecture, with a research and development base in Nagareyama, Chiba. It is led by representative director Yuki Hayashi. The company is best known for organizing "C1," a drone competition framed as a contest between humans and AI, and it builds a cluster of businesses around unmanned vehicles spanning land, sea, and air. The company's activities are organized into four business lines. Its Park business provides amusement experiences using the C1 RDS system, runs an academy, builds environments for unmanned-vehicle proof-of-concept testing, and sells and rents C1 RDS for experience events. Its C1 business stages the human-vs-AI drone competition, split into C1 Race — competitive racing with unmanned ground, surface, and aerial vehicles (UGV/USV/UAV) — and C1 Combat, combat-style competition involving unmanned vehicles and humans on land, at sea, and in the air. Its BeastBusters business contracts for wildlife-repelling and security services using drones, sells and rents drones, and is developing drones for disaster rescue. A fourth line provides technology-management consulting. C1's consulting track record cited by the company includes work for a heavy-industry manufacturer on strategy and business process reengineering across sales, design, manufacturing, and construction; an automaker on BPR and PMO for core manufacturing systems and factory automation; an auto racing team on BPR to define and implement winning measures; an auto-parts distributor on technical support and PMO; a telecom carrier on sales strategy and DX-sales PMO; and an insurance agency on company-wide process visualization and core-system implementation. The company states its mission as creating mechanisms that maximize the earning power of technology and realizing a prosperous and interesting society through technological innovation. It operates primarily in the Japanese market.

History

C1 Ltd. (C1株式会社) is a Japanese company headquartered in Kashiwa, Chiba Prefecture, with a research and development base in Nagareyama, Chiba. It is led by representative director Yuki Hayashi. The company has built its identity around unmanned vehicles — ground, surface, and aerial — and around a competition concept it calls "C1," in which humans compete against AI. The company organizes its work into four business lines. The Park business provides amusement using the C1 RDS system, operates an Academy, builds environments for unmanned-vehicle proof-of-concept experiments, and sells and rents C1 RDS for experience events. The C1 business stages the human-vs-AI drone competition, divided into C1 Race, a competitive race among unmanned ground, surface, and aerial vehicles (UGV/USV/UAV), and C1 Combat, combat-style competition involving unmanned vehicles and humans on land, at sea, and in the air. The BeastBusters business contracts for wildlife-repelling and security using drones, sells and rents drones, and is developing drones for disaster rescue. A fourth line offers technology-management consulting. On the consulting side, the company cites engagements with a heavy-industry manufacturer (strategy and BPR across sales, design, manufacturing, and construction), an automaker (BPR across planning, design, procurement, and manufacturing; PMO for a core manufacturing system; and factory automation), an auto racing team (BPR to define and implement winning measures), an auto-parts distributor (technical support and PMO), a telecom carrier (sales strategy and PMO for DX sales), and an insurance agency (BPR from company-wide process visualization to core-system implementation planning, plus PMO for implementation). The company describes its purpose as creating mechanisms that maximize the earning power of technology and realizing a prosperous and interesting society through technological innovation. It operates primarily in Japan.

Products and positioning

A technology company combining unmanned-vehicle entertainment, competition, security, and consulting, positioned around a human-vs-AI drone racing concept.

  • C1 RDS

    Amusement system used in the Park business and sold or rented for experience events.

  • C1 Race

    Competitive racing among unmanned ground, surface, and aerial vehicles (UGV/USV/UAV).

  • C1 Combat

    Combat-style competition involving unmanned vehicles and humans on land, at sea, and in the air.

  • BeastBusters

    Drone-based wildlife-repelling and security services, plus drone sales and rental.

  • Disaster-rescue drones

    Drones under development for disaster rescue.

Sources2 sources

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