Itanshinmonkan no Aijaku

“Never meet the lord of the swamp castle… or he’ll steal your soul.”
That’s the legend. Ridiculous, right?

Baron Kuruinu, a tyrant who takes an interest in those he finds amusing,
and Kobone, a clumsy but lively nun living in a monastery.

A man and woman with the same eyes, hair, and skin color meet,
and as they live together, they grow closer… but what happens next?

[Translated from dlsite]