KDDI is a telecommunications company. Along with its affiliates, Co. operates in four principal business segments: personal, value, business, and global. Co. is engaged in the sale of mobile handset; and the provision of mobile telecommunication services under "au" brand name, Internet contents, settlement service, and electronic money service for individual customers. Co. offers information and communication technology ("ICT") solution services and data center services for domestic corporate customers, overseas companies and individual customers. Co. is also involved in the call center business, the research and technological development, and the telecommunication facilities maintenance.

NTT Data is an information technology ("IT") company mainly engaged in the provision of system integration and network system services. Along with its affiliates, Co. operates in five business segments: public & social infrastructure, financial, enterprise & solutions, North America, and EMEA & LATAM. Co. provides IT services including system integration, network information, consulting, business solution, and system support services to its customers in various industries both domestic and overseas. Co.'s principal products and services are "Accel-Mart," "Aggregate Master®," "Tableau™," "IMDA®," "IsleLinX®," "BRIMOS®," "RemoteOne®," "WinActor," "ANSER," and "AnserDATAPORT®."

Rakuten is mainly engaged in the Internet-related business. Along with its affiliates, Co. operates in two business segments. The Internet Services segment is engaged in the operation of electronic commerce sites, including an Internet shopping mall "Rakuten Ichiba," an online cash back site, a travel booking site, portal sites and digital contents sites; the sale of advertising on Co.'s sites; the provision of messaging and communication services; and the management of a professional baseball team "Tohoku Rakuten Golden Eagles." FinTech segment is engaged in the provision of Internet banking services and online securities trading services, and the credit card and life insurance businesses.

SoftBank Group is a holding company. Domestic Telecommunications business provides mobile communication services, mobile devices, broadband services to retail customers, and telecom services to corporate customers in Japan. Sprint business provides mobile communication services and fixed-line telecommunication services in the U.S. Yahoo Japan business operates Internet-based advertising and e-commerce business. Distribution business distributes mobile devices overseas, and sells software and mobile device accessories in Japan. ARM business designs microprocessor intellectual property and related technology. SoftBank Vision Fund & Delta Fund business is engaged in the investment activities.

Yahoo Japan is engaged in the provision of Internet advertising and e-commerce services. Media Business segment provides marketing and advertising services including paid search, display, in-feed video advertising and other advertising-related services for corporations; and Yahoo! News and media-related services. Commerce Business segment provides e-commerce related services including YAHUOKU! (net auction site), Yahoo! Shopping, ASKUL, LOHACO and other shopping websites; membership services including Yahoo! Premium, Yahoo! BB and other services; and financial and payment-related services including credit card, e-money, foreign exchange margin trading and other related services.

Start Today is mainly engaged in the electronic commerce ("EC") business. Along with its subsidiaries, Co. operates in three principal businesses: ZOZOTOWN, B to B, and FURIMA. The ZOZOTOWN business operates brand's online shop on ZOZOTOWN by handling their inventory on a consignment based contract. Co. also purchases fashion items from brands and resell them on each brand's online shop on ZOZOTOWN. Additionally, Co. purchases/resales used fashion products from/to its users. The B to B business supports the brands to operate their individual online stores. The FURIMA business offers users a smartphone application called "ZOZO FURIMA" to sell and purchase personal fashion items.