Mystery No Arukikata -01008a401feb6000--v0--jp-... Exclusive File
The Mystery no Arukikata Research Collective (MnARC) maintains a spreadsheet of all known hex codes. You can contribute if you find new references to -01008A401FEB6000--v0--JP-... in old disk images or mobile backups.
However, the phrase (ミステリーの歩き方) is highly suggestive. It combines:
The string identifies a specific digital release of the Japanese Nintendo Switch game Mystery no Arukikata (localized as Path of Mystery: A Brush with Death ). Published by Imagineer and developed by Toybox Inc., this title is the first entry in a planned trilogy of "drama x mystery" adventures.
The string first appeared on around 2014 in a thread titled “Help find – Mystery no Arukikata – missing episode.” A user posted the hex string claiming it was found inside a corrupted .dat file from a retired i-mode game server.