NSSK, a Japanese middle-market private equity firm, completed the investment in Bestlife Co., a reuse business, in which it purchases and sells used brand-name goods. Financial terms were not disclosed. Building on the business foundation Bestlife has established, NSSK will provide its unique NSSK Value-up Program, its business expertise, and domestic and international networks, working with the current management team so that Bestlife can achieve more robust growth in its next stage of development. NSSK will support the planning and implementation of business improvement measures such as accelerating store openings.