Windows 10 (consumer editions), version 1909 (x64) - DVD (Japanese)
ja_windows_10_consumer_editions_version_1909_x64_dvd_b8de58ff.iso
SHA1: 6631680541ae2f23a7a3cbad5d2b6187e492d979

Windows 10 (consumer editions), version 1909 (x86) - DVD (Japanese)
ja_windows_10_consumer_editions_version_1909_x86_dvd_8ca250f2.iso
SHA1: 75a1ff67d1b928333db7f851d38f4aee6ab438de

MSDNに1909のISOきた