遺族に許可云々も明確なソースはこのくらいだけど(この書籍は遺族もチェックしている)
https://books.google.co.jp/books?id=xMP9DwAAQBAJ&pg=PA69&lpg=PA69&dq=%E9%87%91%E7%94%B0%E4%B8%80%E5%B0%91%E5%B9%B4+%E5%AD%9D%E5%AD%90%E5%A4%AB%E4%BA%BA&source=bl&ots=g9Vrl8o_73&sig=ACfU3U1Yei_kcNyYBmcItLYMQ2TCjhC4aQ&hl=ja&sa=X&ved=2ahUKEwjQ97jnrPz8AhVTM94KHc72CjQ4ChDoAXoECAYQAg#v=onepage&q=%E9%87%91%E7%94%B0%E4%B8%80%E5%B0%91%E5%B9%B4%20%E5%AD%9D%E5%AD%90%E5%A4%AB%E4%BA%BA&f=false
https://twitter.com/mokugyo_note/status/1572892100399886336?t=gP9NVGiCTeRTDbfsYhESPQ&s=19
https://twitter.com/5chan_nel (5ch newer account)