- December 4, 2006 [Media Publishing] ZERO-SUM was introduced in NIKKEI newspaper on today.
- October 11, 2006 [Media Publishing] ZERO-SUM was introduced in NIKKEI Business Daily today.
- August 8, 2006 [Media Publishing] ZERO-SUM was introduced in Kyoto Newspaper today.
- August 4, 2006 [Media Publishing] ZERO-SUM was introduced in IT Media.
- August 1, 2006 [Media Publishing] ZERO-SUM was introduced in Kyoto-Venture Net.
- August 1, 2006 [Media Publishing] ZERO-SUM was introduced in Information-Communication Journal.