We provided internal audit support for the overseas subsidiaries of a Japanese company (specialised trading company, consolidated turnover exceeding ¥10 billion). Given that the company’s business partners and financial institutions are major corporations requiring high standards of compliance and reliability in financial reporting both domestically and internationally, management has recognised longstanding challenges in overseeing overseas subsidiaries where monitoring has traditionally been difficult. To address these concerns, we conducted internal audits as external consultants. Our deliverables extended beyond merely identifying issues; we prioritised findings based on practical considerations, and provided management with comprehensive reports including action plans for remediation. Follow-up audits were also conducted as part of our ongoing support.