In the world of Japanese indie (doujin) games, are unique identifiers used by the storefront DLSite . RJ01177758: Refers to the base game, LOOK.hac .
[Base Game Directory: LOOK.hac] ├── LOOK_hac.exe ├── [data] └── [plugins] <─── Place v22 ENG Patch files here eng lookhac dlc v22 rj01177758 rj01195 exclusive
To locate it: