To provide a system and a method for ticket sale capable of effectively utilizing performance tickets by a stable discount sale.

A reading retrieval part 6 allows a client system C to read registration information corresponding to the ticket through the Internet N, and provides at least either of a single condition retrieval, composite condition retrieval, and multi-stage narrowing retrieval for registration ticket according to retrieval conditions on registration information. A horoscopy recommendation part 7 provides a horoscopy or a psychological test to the client system C through the Internet N according to the operation of a user, or allows the user to select the type, stage of affection, or mood of a scene related to a memory, and based on the results thereof, recommends at least either of the ticket and the condition thereof.