Hayariami 1 DS prelemenary research

Hayarigami 1 DS contains 4 folders
*dat
*g2d
*sound
*ftc

Types of files and ther purposes
-dat (Folder)
*dat  b
*tre  b
*did  https://forum.xentax.com/viewtopic.php?f=10&t=24560&p=178577
*pak  Package File

-g2d (Folder)
.tx2   https://forum.xentax.com/viewtopic.php?f=18&t=24343&p=177100
.NFTR  Nintendo DS Font Type File  https://forum.xentax.com/viewtopic.php?f=35&t=24521&p=178253#p178253
.NCLR  Nintendo DS Color Palette File  http://www.romhacking.net/documents/[469]nds_formats.htm#NCLR
.NSCR  Nintendo DS Title Screen File  http://www.romhacking.net/documents/[469]nds_formats.htm#NSCR

-sound (Folder)
*sound_data.sdat  a music archive file  https://tcrf.net/Format:SDAT

-ftc (Folder)
*rom.nds
*fnt.bin  file name table
*banner.bin  the game's icon and name in various languages
*arm9.bin  the binary for the ARM9 processor of the DS
*arm7.bin  the binary for the ARM7 processor of the DS