degree in Economics, he worked for a foreign computer company. He then worked at ISAO (now Colorkrew), and after participating in and managing a startup, he made a comeback to Colorkrew in 2008. He is responsible for the entire sales organization as well as new business. His hobbies are history and watching baseball games. Makoto Yoshioka Executive Officer, Head of Sales After graduating from Waseda University with a PhD in Fundamental Science and Engineering, he worked for a major telecommunications company and a major IT company before joining Colorkrew in 2018. As a lead engineer, he is involved in the development of multiple Products and is responsible for the overall engineering as CTO. His hobby is reading books. Li Ning Executive Officer, CTO After graduating from Chuo University with a Bachelor of Commerce degree, he worked in several service development positions in entertainment and IT companies before joining Colorkrew in 2013. After working in enterprise sales, head of billing and payment business, and head of human resources, he is currently in charge of the entire Client Business called ITPS. He enjoys cooking and DJing. Yusuke Ishihara Head of ITPS