Links:
Company site: https://www.s-f-c.co.jp/
Media release for Nqsi: https://entamerush.jp/258125/
Media release for Sivyl: https://prtimes.jp/main/html/rd/p/000000004.000087126.html
Pitchbook: https://pitchbook.com/profiles/company/520809-85
Initial: https://initial.inc/companies/A-27940
Wantedly: https://www.wantedly.com/companies/company_7390971
Wantedly posts about Sivyl: https://www.wantedly.com/projects/731889 https://www.wantedly.com/projects/875434

Links:
Creww for DRESSCORD: https://creww.me/ja/startup/dress-cord.jp
TRIGGER blog: https://ameblo.jp/trigger2011/entry-10795637035.html
Spring Water: http://springwater.gr.jp
Facebook: https://www.facebook.com/tatsuya.kurohama/
Twitter: @t_kurohama (may have changed handles, probably deleted from Elon's purge, last active 2011 with that handle)
Facebook post by Breakpoint on DRESSCODE: https://www.facebook.com/breakpoint.co.jp/posts/pfbid0kLaYTBHvCwzcoEAEs1tR6Gs3rhpXtXBCbiQxPN4R1nw56yAWWxiAnDA3HsBZsgSVl
Interview with Kurohama from the Entrepreneur: https://bbank.jp/entrepreneur/interview/aroundtwo/1305