Filenames not appearing in extracted files

[JW-engineer]

I am encountering this issue both in Windows Subsystem for Linux (WSL) (using Ubuntu) and native Windows 11.
The filenames are not right, and are appearing as hex.
MXMC_Definitions.cjson and TSN_Abstracter have both been kept in the folder containing the .exe file.

There is also a .hex file in each directory with files.
For example, "BlueArchive\Extracted\BlueArchive_Data\StreamingAssets\PUB\Resource\GameData\MediaResources\Audio\BGM"
has
0x000000000-0x000000053.hex
and
0x000000053-0x000174778.ogg

Excerpt from Ubuntu:

/mnt/c/Program Files (x86)/Steam/steamapps/common/BlueArchive$ python3 TSN_Kozeki.py
[2026/07/10 - 11:55:00] - Kozeki Azure v0.8.5 © (2025-2026) - Ascellayn, The Sirio Network | TSN License 2.2 - Universal
Kozeki is a TSNA based tool to extract Blue Archive's .molru PC files, a cursed file type given to us who like to poke around a bit too much.
[2026/07/10 - 11:55:00] - Calculating MXMC Hash [OK]
[2026/07/10 - 11:55:00] - Info: MX_MediaCatalog → Need to process a total of 7003698 Bytes; MXMC Hash: "4e3450a5fafb05282efd45d949fd4209" - Size: "62304"
[2026/07/10 - 11:55:01] - Info: MX_MediaCatalog → Cached MXMC Definitions Cache found and versions match, avoiding re-discovering everything.
[2026/07/10 - 11:55:02] - Info: Kozeki_Extractor → Discovered 1096 Molru files, proceeding to extraction.
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH0184.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0185.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0239.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0184.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_Suzumi.molru: Hex of 53 Bytes @ 0x000000-0x000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_Aris.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_SM0164.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0088.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0263.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH9998.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH0268.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_Akari.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH0137.molru: Hex of 53 Bytes @ 0x00000-0x00053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH0230.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_CH0144.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → JP_Serika.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:02] - Warning: Write_Unknown → KR_CH0224.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:55:03] - Warning: Write_Unknown → KR_CH0193.molru: Hex of 53 Bytes @ 0x0000000-0x0000053

and continues till:
[2026/07/10 - 11:58:27] - Warning: Write_Unknown → JP_CH0275.molru: Hex of 53 Bytes @ 0x0000000-0x0000053
[2026/07/10 - 11:58:28] - Warning: Write_Unknown → 41.molru: Hex of 53 Bytes @ 0x00000000-0x00000053
[2026/07/10 - 11:58:59] - Extraction finished in 03m 56s 0777ms 0609µs 0034ns.

[Ascellayn]

Hmm that's odd, the first item having no name is intentional, that's the molru header and we don't know how to read/process it, and by default Kozeki adds the address range that the file corresponds to (plus there's no file name for it in the MXMC)
As for the OGG thing, it's probably tied to #9(?)
I'll look into this when I can because right now life's a complete utter mess 👍