Problem with [Rapapuru]Mama Mama Mama about arc_unpacker

[rr-]

The file is definitely truncated (it has 65536 bytes while it should have at least 416350 bytes), so arc_unpacker's TLG decoder is right about this one. Can I see .xp3 or the title of the problematic game?

[NhKPaNdA]

.xp3 is 318mb, too big for me to upload.
The game's title is: Mama Mama Mama
Vndb link: https://vndb.org/v1621

And as mentioned in the issue post, the file it got extracted from is fgimage.xp3

[rr-]

I've just checked the game myself. The archive they ship is corrupt - the file is definitely truncated: XP3 reports the size as 65536 rather than ~416350 (this number is taken from the file header that decodes correctly), and when I checked the archive with a hex editor, there's no hidden extra data inside - right those 65536 are immediately followed by another file.