A newly-ordained nun who was forcefully given the Vatican's 103,000 most forbidden
books on her brain while being shackled by Catholic Confessors and Inquisitors. She goes with Touma, a man who was too unlucky bastard who unknowingly built a
harem on himself. She also got a pussycat named Sphinx.
She has a black
hole as a stomach, who eats Touma's budget. And bits the bastard if she's pissed.