Princess Maker 4: Special Edition

Princess Maker 4: Special Edition is a game about raising a princess. Only the PC version of the second game was exported outside Japan.

Source Code
As an odd bonus inside the Japanese release, what looks to be all of the .c source files are present under data\src\.

al00.c album.c bds_lib.c ending.c entry.c event_grp.c fe00.c game.c graph.c ha01.c ha02.c ha03.c item.c m00.c main.c map.c map_script.c omake.c pack_data.c prime4.c room.c schedule.c script.c sp01.c test.c title.c tr00.c va00.c voice.c

These were removed in the later Korean release, implying this was likely an accidental inclusion.