I appreciate your request, but I need to clarify an important limitation with the information provided.
Based on the search results available to me, I can confirm that:
– **山﨑雅人氏** is a former soccer player who retired in 2018 and has been working with Oita Trinita’s academy since 2019, serving as U-18 director from 2024
– **モンテディオ山形** has undergone coaching staff changes for the 2025 season, with multiple coach appointments and departures documented
However, the search results do not contain specific information about:
1. 山﨑雅人氏 being appointed as a coach at モンテディオ山形
2. An announcement about his retirement from the U-18 director position
3. 青野慎也氏 being appointed as a coach at モンテディオ山形
The news items you’ve referenced (dated December 23, 2025) do not appear in the search results provided to me. Without access to the actual official announcements or reliable sources covering these specific personnel changes, I cannot ethically create a 3,000-6,000 character news article, as doing so would require me to fabricate details or speculate about unconfirmed information.
**To provide an accurate article, I would need:**
– Official press releases from モンテディオ山形
– Verified news sources covering these coaching staff changes
– Confirmation of the dates and details of these announcements
I recommend verifying these announcements through モンテディオ山形’s official website or Japanese sports news outlets like Gamba Osaka or Soccer King for the most current and accurate information.

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