Atsumoto has worked for CyberAgent Group for about 15 years, and has experience in media sales, CA Technology (SEO operating company), and CyberZ (smartphone specialized agency). Atsumoto has worked for CyberZ for about 10 years, concurrently serving as General Manager of West Japan Division and SAP Marketing Strategy Office, and promoted the CA Group's first US-based customer. Atsumoto has also launched a hyper-casual game company to promote apps.