PROBLEM TO BE SOLVED : To provide an inheritance system using a portable terminal that mediates inheritance and information/money settlement via an Internet connection function of a portable terminal.SOLUTION : When a testator portable terminal 1 accesses an inheritance service server 2 to apply for a factum service (S1), the inheritance service server 2 provides a CGI for factum (S2), and the requester enters personal information and will information (S3). The inheritance service server 2 sends an individual confirmation application to a government office server 3 (S4), and the government office server 3 returns corresponding inhabitant identification information (S5). The inheritance service server 2 sends an asset check request to a bank server 4, and sends a real estate check request to a real estate registration server 5 (S6). The bank server 4 returns balance information about the requester' s account, and the real estate registration server 5 returns real estate registration information about the requester (S7). The inheritance service server 2 makes a will according to the confirmed information (S9).