Your marriage is automatically recognized by Taiwanese Law when you have a public wedding in Japan. You don't have to register it. The registeration is only for known by public and prevent any misunderstanding. (公示作用,讓大家知道以免誤會) However, as the registartion habitually practiced in Taiwan, it is suggestible to do it and prevent misunderstanding.
Lin, Attorney at Law
Address: 13F, No. 27, Zhongshan North Road, Section 3, Taipei Telephone: 29810665
E-mail: email@example.com Areas of practice: Child Custody, Marriage/Divorce, Estates, Contracts, Corporations, Trademark Law, Immigration, Criminal Law and Government Relations
Consulting Fees: 4,000 NTD per hour Representative before the Court: 80,000 -150,000NTD per case,
Marriage/Divorce/Collection only Translation fee, postage excluded