Faux Saint's Heretic Hunting

Midra is an embattled continent contested by a puritan faith and a lusty cult.
At the turn of every century, the faiths conduct a ritual to summon their champion from another world,
and whichever ritual succeeds decides the dominant faith.
Last century, the puritans succeeded in completing the ritual, but the evil cult didn't vanish.
They retreated to the darkness, biding their time while plotting a counter that would turn the tables.

Now, it's a new century, and "Puella", the champion summoned for the puritans,
a lazy girl with no interest in the high risk low return life of a holy woman.
The only thing she cares about is getting back home, but the puritans are not so keen on that idea.
If she wants out of this situation, she'll need to go exterminate that evil lust cult once and for all.
Can she prove her worth in battle, and escape the control of the church?