ASUENE by Asunene and Bill One by Sansan Co., Ltd. Integrate Services Starting from Invoice Data to Accelerate DX and GX

Asunene Co., Ltd. (Headquarters: Minato-ku, Tokyo; CEO: Kohei Nishida, hereinafter "the company"), provider of the cloud-based CO2 emissions visualization, reduction, and reporting service "ASUENE", has initiated integration with Sansan Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; President, CEO, CPO: Chikahiro Terada), and its finance AX service "Bill One". Through the integration of two widely adopted enterprise services, both companies aim to advance CO2 emissions calculation using invoice data and enhance sustainability reporting with a focus on SSBJ compliance and preparation for third-party assurance.

Additionally, at the upcoming "ASUENE SUSTAINABILITY SUMMIT 2026" scheduled for July 23, 2026, Sansan Co., Ltd. will host a special session. The session will present both companies’ collaborative initiatives and practical approaches addressing real-world challenges related to SSBJ compliance and third-party verification.

Background of the Integration

Sustainability disclosure by corporations is evolving rapidly, with the Sustainability Standards Board of Japan (SSBJ) actively developing disclosure standards. Listed companies, in particular, are increasingly required to manage non-financial data such as CO2 emissions with high reliability and prepare for third-party assurance.

As a result, establishing robust systems to properly manage source documents such as invoices and supporting evidence has become a critical challenge.

Asunene supports corporate decarbonization through "ASUENE", the CO2 visualization service with the highest number of cumulative enterprise adoptions in Japan. Sansan drives digital transformation and AI transformation in accounts payable operations through "Bill One", which has ranked No. 1 in market share for three consecutive years* in the cloud invoice receipt service market.

By integrating two services with extensive enterprise adoption, the companies aim to elevate CO2 emissions management and sustainability disclosure processes in preparation for SSBJ compliance and third-party assurance.

Details of the Collaboration

The collaboration will connect "ASUENE" with "Bill One".

By integrating invoice data stored in "Bill One" into "ASUENE", companies can efficiently calculate CO2 emissions using actual invoice information. This reduces manual input errors and enhances the accuracy of emissions calculations based on verifiable documentation.

Furthermore, by linking CO2 emissions data with corresponding invoice data, companies can centrally manage calculation evidence, supporting data and document governance aligned with SSBJ compliance and third-party assurance requirements.

Specific details of this service integration will be presented during a session at the "ASUENE SUSTAINABILITY SUMMIT 2026" on July 23, 2026.

Pre-registration (free) is available via the dedicated website:

ASUENE SUSTAINABILITY SUMMIT 2026: https://asuene.com/asueneesgsummit/2026

About Sansan Co., Ltd.

Company Name: Sansan Co., Ltd.

Representative: President, CEO, CPO Chikahiro Terada

Headquarters: Shibuya Sakura Stage 28F, 1-1 Sakuragaoka-cho, Shibuya-ku, Tokyo

Website: https://jp.corp-sansan.com/

About ASUENE

"ASUENE" is a sustainability AI platform that enables visualization, reporting, and disclosure of Scope 1-3 emissions using AI. It also provides advanced consulting services for compliance with global frameworks such as CFP/LCA calculation, CDP, SBTi, CSRD, TCFD, TNFD, and SSBJ. "ASUENE" holds the No. 1 position in cumulative domestic enterprise adoptions for CO2 visualization services (based on Tokyo Shoko Research survey as of July 2025).

ASUENE Service Website: https://asuene.com

Company Overview: Asunene Co., Ltd.

Company Name: Asunene Co., Ltd.

Business Activities:

- Sustainability AI Platform "ASUENE"

- Supply Chain Management AI Platform "ASUENE SUPPLY CHAIN"

- Sustainability Recruitment AI Platform "ASUENE CAREER"

Group Companies:

- Carbon Credit Integrated AI Platform "Carbon EX"

- Third-Party Assurance/Verification & Disclosure Advisor "ASUENE VERITAS"

- AI Data Integration Platform "Anyflow"

- AI Energy Reduction Platform "NZero"

Capital: 8.3 billion JPY (including capital surplus)

Representative: Founder, CEO Kohei Nishida

Address: 6F Tokyo Toranomon Global Square, 1-3-1 Toranomon, Minato-ku, Tokyo

Global Offices: Japan, Singapore, USA, Thailand, UK, Philippines

URL: https://corp.asuene.com/

*Market Share No.1: Deloitte Tohmatsu Mickei Research Institute, "Cloud Invoice Receipt Service Market Enters New Phase with AI Adoption" (Mickei IT Report, December 2025) https://mic-r.co.jp/micit/2025/