If you prefer not to use external software, on PC has native debug cheats that players discovered after realizing faulty keyboards were triggering them. These typically require completing the game with all three characters first. F2 : Level up character by 1. F3 : Instantly gain 10,000 SP. F4 : Rapidly heal to full health. Quick Setup Guide To apply these cheats to your GOG version of Ys Origin :
For specific "Extra Quality" tweaks—like skipping the grind for Yunica's schoolgirl outfit—you can use Cheat Engine to target specific memory addresses. Experience & Leveling: Search for your (not current level EXP) using the data type. Alternatively, modify your Hit Modifier ys origin gog cheat engine extra quality