>>281335596
Undisclosed data doesn't exist, because sales in Japan require the payment of taxes to the Japanese government. If CLAMP had managed to evade taxes for nearly 30 years, they would have long been imprisoned by the Japanese government.

As long as CCS maintains tax records, this data will be accessible to professional market research organizations in Japan. While CCS fans may be foolish, don't assume others are as foolish as you.