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Fallen Priestess: My Sister's Demonic Bloodline
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Embark on a thrilling quest to defeat the Demon King and save Trina from the curse of her demon blood. Protect her from those who seek to corrupt and steal her from you. Conquer dungeons, battle dangerous foes, and master unique Synthesis skills in this intense adventure!
PC (Microsoft Windows) · Nov 21, 2025
Worldwide · Exact date · Full release · IGDB
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Main game
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16 achievements available.
Hidden until unlockedSteam
Clear the Normal Ending
LockedSteam
Hidden until unlockedSteam
Hidden until unlockedSteam
Hidden until unlockedSteam
Reach Phase 2
LockedSteam
Reach Phase 3
LockedSteam
Protect your sister well
LockedSteam
Fail to guard your sister
LockedSteam
Complete your first synthesis
LockedSteam
Use a firearm for the first time
LockedSteam
Successfully infiltrate without potions
LockedSteam
Buy the Stellar Ruby
LockedSteam
Hidden until unlockedSteam
Hidden until unlockedSteam
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Community notes
