People seek self-verification from others. Previous studies suggest that striving for self-verification (e.g., the disclosure of accurate self-information and the preservation of a sense of coherence about oneself in social relationships) functionalizes couple relationships in Western cultures. However, there has been little research on couples in Asian cultures. The aim of this study is to address this gap by examining 46 heterosexual Japanese couples. Attitudes and behaviors regarding striving for self-verification, stress communication, and trust in marital relationships were assessed using a questionnaire. In contrast to previous Western studies, Japanese couples striving for self-verification had a stronger association between the attitudes of wives regarding striving for self-verification and their own trust and stress communication than that of their husbands. The role of Asian wives is also discussed.