Seimitsu

Seimitsu is an internet service provider (ISP) that was established in 2021. It offers a wide variety of different services that include a fiber-optic network and telecommunications services, in addition to standard internet services. Seimitsu currently covers the majority of Japan, with some coverage in some parts of Asia.
Seimitsu's operations are known for their reliability, as they have devoted resources to frequently upgrading their network infrastructure. They have implemented technologies such as IPv6 and mesh networking for added security and speed.
Customer service is one of Seimitsu's strong points, as they provide support through 24/7 chat rooms, a customer service line, and a large FAQ database.