Shiniyuku Kishi, Isekai ni Hibiku Danmatsuma
死に逝く騎士、異世界に響く断末魔
https://vndb.org/v49274
it uses xp3 files and garbro already has the encryption scheme for the previous game, Shiniyuku Kimi, Yakata ni Mebuku Zouo
死に逝く君、館に芽吹く憎悪 https://vndb.org/v19233 but not the newer one, and it's not the same scheme. Tried it an it doesn't work. neither does garbro mod https://github.com/nanami5270/GARbro-Mod or win garbro https://github.com/YuriSizuku/win-GARbro
haven't been able to figure it out yet.