Hiroyasu Nakatsuka

WILLCOM OKINAWA, Inc. engages in the provision of telecommunication services. The company is headquartered in Naha, Japan.

SB Payment Service Corp. engages in the provision of payment service, card point service, remittance service and collection agency service. The company was founded on October 1, 2004 and is headquartered in Tokyo, Japan.

T Point Japan KK engages in the operation of the T point program. The company was founded on October 1, 2012 and is headquartered in Tokyo, Japan.

Part of SoftBank Corp., Line Mobile Corp. is a mobile virtual network operator founded in 2016. The company is based in Tokyo, Japan. Line Mobile offers cheap smartphones and SIM cards, including a popular data-free option for Line and other major social media platforms. The reason for their affordability is unclear.