Koichi Oyama provides planning for new business, technology, and marketing strategy development, primarily for clients in the auto and manufacturing industries. More recently, he has assisted clients with devising management strategy integrated with social sustainability, including medium-term business plans rooted in sustainable development goals (SDGs), new business planning oriented to social solutions, and Task Force on Climate-related Financial Disclosures (TCFD) compliance. He also heads the corporate administrative office for a study group on creating a hydrogen-based society centering on fuel cell vehicles.