DION is a Japanese internet service provider (ISP).
“ In November 2003, KDDI launched "Sesame BB", a broadband content program for all family members. On February 20, 2004, KDDI launched a "DION ADSL 1 Million Sesame Campaign", promoting "Sesame BB" to an even wider range of potential users. ”
A board puzzle set was created to market their promotion.