I want Japanese mark of a voiced sound in speech characters to be unified with NFC.

-Overview-
example: the 'ga' syllabary series in the Japanese alphabet
'ガ'is U+30AC on windows or unix/linux
-> NFC(Normalization Form Canonical Compression)
'ガ'is U+30AB U+3099U on mac OSX
-> NFD(Normalization Form Canonical Decompression)

As you know, mac OSX　use only NFD.
Windows use NFC usually, but NFD can be used at the same time.

When trying to share BOX folder between Win and mac, Inconvenience occurs.

-problem-
First
In Windows explorer, NFC and NFD are displayed as the same character on the screen, so they are indistinguishable.

The second
In Adobe InDesign, image files are managed as "link files", but file names are managed by NFC, so upload InDesign data created on mac OS to the shared BOX folder and download it on Windows. Cutting file link will occur.

The third
Where NFC uses one character in UTF-8, NFD uses two characters in UTF-8.
The file "がぎぐげござじずぜぞだぢづでどばびぶべぼぱぴぷぺぽガギグゲゴザジズゼゾダヂヅデドバビブベボパピプペポヴ.txt" can be used on macOSX, but this file cannot be saved on the BOX server by Finder using BOX Drive.
Even if two characters are used, "xx.txt" uses only 106 characters.
And from Windows PC,
The file "がぎぐげござじずぜぞだぢづでどばびぶべぼぱぴぷぺぽガギグゲゴザジズゼゾダヂヅデドバビブベボパピプペポヴ.txt" (By NFC) there will be no problem with BOX Drive.
But, with macOS X / Box Drive, the inside of the BOX server is not displayed in the Finder.
"がぎぐげござじずぜぞだぢづでどばびぶべぼぱぴぷぺぽガギグゲゴザジズゼゾダヂヅデドバビブベボパピプペポヴ.txt"(By NFC) uses only 55 characters in NFC.
Are you having another problem?

-Operation on mac OSX-
When writing to a FAT32 formatted USB memory device on mac OSX, write the file name using NFC.

When uploading data to a shared folder using the cifs protocol on mac OSX, write the file name in NFC format.

When uploading data to a shared folder using the AFP protocol on mac OSX, write the file name in NFC format.

On mac OSX, write file name in NFD format only when writing data to HFS+ format HDD.

mac OSX does not accept any NFC on HFS+, and NFC automatically converts to NFD when downloading data from the BOX server.

-Proposal-
When writing data to the BOX server using BOX Drive for MacOS, please convert it to NFC instead of NFD and write the data.

When uploading to the BOX server, no one will be troubled even if it is converted to NFC instead of NFD and saved. Inconvenience has occurred rather than being saved as NFD.

-Additional explanation-

mark of a voiced sound in speech characters is below.

がぎぐげご
ざじずぜぞ
だぢづでど
ばびぶべぼ
ぱぴぷぺぽ
ガギグゲゴ
ザジズゼゾ
ダヂヅデド
バビブベボ
パピプペポ

ヴ

by NFC

がぎぐげご
ざじずぜぞ
だぢづでど
ばびぶべぼ
ぱぴぷぺぽ
ガギグゲゴ
ザジズゼゾ
ダヂヅデド
バビブベボ
パピプペポ

ヴ

by NFD