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Article History

Received: 23 February 2026

Accepted: 24 July 2026

First Online: 4 August 2026

Declarations

Ethics approval and consent to participate: The study received ethical approval from Tohoku University IRIDeS Ethics Committee (Approval Number: 2024/24). All research procedures were performed in accordance with the ethical guidelines and regulations of Tohoku University IRIDeS and the principles outlined in the Declaration of Helsinki. We obtained freely-given, informed consent to participate in the interviews from all research involving human subjects.

Consent to publication: Not applicable.

Competing interest: The authors declare no competing interests.

Field permission: Necessary field permissions were obtained from the relevant local organizations prior to data collection.