Mitsui Energy Resources Development Co., Ltd. Introduces Contract Management Cloud Service "Hubble mini"

Mitsui Energy Resources Development Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo, President and Representative Director: Naoshi Ishizuka), which globally develops energy businesses such as oil and natural gas, has officially introduced "Hubble mini," a contract management cloud service provided by Hubble Inc. (Shibuya-ku, Tokyo, CEO: Shinpei Hayakawa, CTO: Katsuya Fujii, CLO: Tomoya Sakai). We are pleased to announce that full-scale operations have commenced.

Background for "Hubble mini" Introduction

To centralize the storage location of contracts and comprehensively manage document information and contract ledgers.

To accurately grasp contract periods and renewal timings (including automatic renewals) and prevent oversight.

To enable quick searching and access to necessary contracts.

To freely set and operate company-specific management items.

To improve operational efficiency through AI-based automatic registration of ledger items, enhanced searchability and viewability, and linking of related contracts.

Deciding Factor for the Official Introduction of "Hubble mini"

Previously, we stored executed contracts in SharePoint and managed the contract ledger in Excel. However, we felt challenges regarding contract expiration management, searchability, and the operational burden of complying with the Electronic Books Preservation Act. To fundamentally solve these issues, building a more reliable and efficient contract management foundation was essential.

Among the services from various companies we compared, there were two main reasons for deciding to introduce Hubble mini.

The first was the English-language user interface (UI), which was essential for our company, having overseas bases. Hubble mini features a simple and intuitive UI, and its compatibility with English contracts was the deciding factor.

The second was the flexible management functions required for our company, which handles many contracts with foreign companies. We highly valued Hubble mini's "Custom Item AI Auto-Input" function, which allows for the setting of unique items and supports the management of contract information, including multiple currencies.

Since the introduction, we have seen significant improvements in contract searchability and ledger accuracy, and we are experiencing the effects in both the efficiency of contract management operations and strengthened control.

Miwa Oguma, General Affairs Department Manager, Mitsui Energy Resources Development Co., Ltd.

<Company Profile of Mitsui Energy Resources Development Co., Ltd.>

Company Name: Mitsui Energy Resources Development Co., Ltd.

Location: Otemachi One Mitsui Building 14F, 1-2-1 Otemachi, Chiyoda-ku, Tokyo

Representative: Naoshi Ishizuka, President and Representative Director

Capital: 33.1334 billion yen

Established: July 19, 1969

Business Activities: Exploration, development, production, and sales of oil, natural gas, and other energy resources, as well as investment.

URL: https://www.moeco.com/index.html

▽ For inquiries about this article or "Hubble mini," please click here:

https://hubble-docs.com/contact

▽ For introduction case studies from other companies, please click here:

https://hubble-docs.com/cases

◆ What is "Hubble mini"?

"Contract management is as simple as uploading."

This innovative cloud service automatically analyzes contract details using AI and instantly builds a contract ledger simply by uploading executed contract PDFs. It significantly reduces the time and effort previously required for inputting contract information, thereby streamlining post-execution contract management.

Furthermore, it is equipped with the "Custom Item AI Auto-Input" function. In addition to the main nine items, company-specific management items can be freely set and operated, regardless of industry or business type. It also includes numerous convenient functions tailored for daily operations, such as automatic notifications for renewal deadlines, flexible permission settings, and high-functionality search that allows cross-searching of paper and electronic contracts.

It is also fully compliant with the revised Electronic Books Preservation Act (JIIMA certified). It can be used immediately by anyone, from small-scale startups to full-scale enterprise deployments, regardless of company size or industry.

In the future, contract data built with Hubble mini can be upgraded to the full Hubble system, responding to current challenges and supporting future growth.

- Service Site: https://hubble-docs.com/lp/Hubble-mini/

◆ Company Profile of Hubble Inc.

Hubble Inc. aims to "solve tangible challenges with technology and create a future where the individuality and creativity of workers can be expressed" as its purpose, and provides and operates the following services:

- Contract Operations and Management Cloud Service "Hubble" https://hubble-docs.com

- Cloud Service that builds an AI contract database simply by inputting executed contracts, "Hubble mini" https://hubble-docs.com/lp/Hubble-mini/

- NDA signing platform in a consortium format aiming for standardization of NDAs, "OneNDA" https://one-contract.com/

- Media to enhance legal productivity "Legal Ops Lab" https://hubble-docs.com/legal-ops-lab/

The Hubble series is used by over 1,000 companies in total, from listed companies to venture companies, across various industries and business types (as of July 2026).

- Location: 7F, Shibuya Property Tower, 1-32-12 Higashi, Shibuya-ku, Tokyo 150-0011

- Directors: Shinpei Hayakawa (CEO) / Katsuya Fujii (CTO) / Tomoya Sakai (CLO, Attorney-at-Law)

- Company Overview: https://hubble-docs.com/about