Our Psychiatric Nursing research team (Michiko Kawamura and Shingo Kuzushima) has been conducting collaborative research with Lisna Agustina, a STIKes Medistra Indonesia Faculty Member, since 2019 on the theme of A Cross-Cultural Comparison of Nursing Attitudes Toward Patients with Mental Illness. The research project came from our desire to take concerted efforts to restore the health of mentally ill patients without denying their basic human rights, regardless of the local conditions in each country. In 2022, the research team, along with Lisna Agustina and three other members, prepared Indonesian and Japanese versions of audiovisual materials to conduct an international comparison of the concept of nursing care for mentally ill patients. We then recruited 25 to 30 nursing students from both countries as research collaborators, conducted group interviews using the audiovisual materials developed in each country, and analyzed the contents to compare the two countries. Both universities conducted the interviews partially online as part of the measures taken to prevent the spread of COVID-19. The interview analysis revealed the characteristics of each country’s way of thinking. In the future, we hope to perform a comparative study of nursing faculty members’ attitudes as the second part of our research with STIKes Medistra Indonesia, followed by a comparative study of clinical nurses’ attitudes as the third phase.