i have Masaya Game Music Collection Vol. 1 ~Langrisser I-II-III~ is it better than the one you are looking for?
BTW i'm looking for high quality mp3 for:
Langrisser II Original Game Music:
https://vgmdb.net/album/2517
Langrisser IV Original Soundtracks:
https://vgmdb.net/album/13817
Langrisser Millennium Remastered Soundtracks:
https://vgmdb.net/album/18451
LANGRISSER V ORIGINAL SOUNDTRACKS:
https://vgmdb.net/album/5749
Langrisser V Remastered Soundtracks:
https://vgmdb.net/album/8677
Langrisser ~Hikari no Matsuei~ Remastered Soundtracks:
https://vgmdb.net/album/9329