RDB

RDB is an archive format used in Persona 5 Strikers. It was developed by Koei Tecmo Games and is the successor of LINKDATA. It has most of the game data, except for text, tables, sound and some others.

Cethleann
Cethleann was made by Yretenai and is made to unpack many Koei Tecmo's archive formats. It is a commandline tool, usage for unpacking P5S PC RDBs is: