After working at Ogilvy & Mather, TBWA\HAKUHODO, TBWA\CHIAT\DAY Los Angeles, and Media Arts Lab, Motonori joined Accenture Song in 2020 and a founding member of Droga5 Tokyo. He is a pioneer and change agent in a new era of the industry, expanding the role and possibilities of creativity. He has worked with a wide range of clients including Apple, McDonald’s, adidas, Meta, Amazon Music, Honda, and Shiseido. He has won numerous awards and commendations to date in both Japan and across the globe including Cannes Lions, Spikes Asia 2024, Dubai Lynx 2024, D&AD 2024 Graphite, Clio Health 2024 Gold.

Recently, he was a part of the jury for NY ADC 2025 (Advertising), ADFEST 2025 (Film, Outdoor, Press, Radio&Audio), Creative LIAisons 2025, Spikes Asia 2024 (Film), AICP Show 2024, ONE ASIA 2022 (Film), and CICLOPE Asia&Global 2021. In the 2022 Agency of the Year Awards for Japan/Korea at Campaign Asia-Pacific, Motonori was awarded "Creative Person of the Year". With his contribution, Accenture Song have topped 8 winners and gold, the largest number in 2022 and also won 7 Gold in 2021. He was also selected for the "40 Under 40" 2022 in APAC.