The v0 inside the code string suggests that 01008A401FEB6000 belongs to a — a prototype for what should have been Mystery no Arukikata 2: Chūgoku Region . According to a 2017 interview with retired developer “T. Nakazawa” (pseudonym), the sequel was canceled after:
Kisaragi whispers (translated from Japanese): Mystery no Arukikata -01008A401FEB6000--v0--JP-...