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The strongest battle sister, Leah, sent by the church to the haunted cave occupied by evil spirits! Within the dungeon, numerous lewd events await Leah. Will she be able to save the miners without violating the divine commandments?
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
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Try this game before buying.
Monastery of Adelia Abbey, a group of exorcism experts known as the "Battle Sister" gather.
One day, they receive a commission.
The commission requests them to clear the emerging evil spirits in a cave, which has now become a mining site.
The appearance of these evil spirits poses a threat to the kingdom's economic lifeline.
Many miners have gathered there, urgently needing rescue.
The one appointed for this task is the strongest battle sister, Leah.
Leah is an exorcist who has been fighting evil spirits since childhood.
She first arrives at the checkpoint near the cave entrance.
There, temporary accommodation for miners and various facilities for preparing tools are set up.
There is a natural hot spring, with male and female bath areas separated by only a curtain.
In addition, there is a "Brothel" created to satisfy male needs, and more...
Sister Leah, a devout sister dedicated to exorcism, whose life takes a sinful turn with lustful!
This is a simple adult RPG based on exploring bases and dungeons.
In the dungeon, there is no combat; you only need to chant magic to defeat enemies.
However, in the cave, due to the influence of evil spirits, the air is filled with "pheromone gas," and as you progress, the "erotic" becomes easier to increase.
As the "erotic" increases, the consumption of magic points will sharply increase.
(To make you defeat, super lusty poisonous swamps are placed throughout.)
Use the skill to exorcise evil spirits with one blow.
Erotic status - undergoes obvious changes with each H event!
Change outfits obtained in the equipment screen, influencing character illustrations.
Right now the cheapest offer for Battle Sister Leah is PLN 91.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Battle Sister Leah is PLN 64.39 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Battle Sister Leah drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
