If you have stumbled across a file named along the lines of [PC] Sangokushi X with Powerup Kit (Japan) (ISO) (r13).7z or similar, you are looking at a disc image of Koei’s 2004 strategy-RPG hybrid, Romance of the Three Kingdoms X , specifically the Japanese PC version including its expansion: the Powerup Kit (PUK). The “13” likely refers to a split archive part (e.g., part 13 of a multi-part RAR set) or a build number from a scene release group.
: The PUK adds Marriages and Births , allowing your character to have a family and raise children. New Modes :
