Prologue

I didn't intend to make this kind of bet from the start. While sharing drinks with a friend late at night, the conversation turned to someone I had been secretly harboring feelings for. It was the nun I met at the cathedral. With her calm voice and warm smile, I had liked her in secret for a long time. However, because of her status as a nun, I never dared to reveal my feelings. Then, my wealthy and capable friend laughed playfully and said to me, "You like her that much, but you can't even strike up a proper conversation, can you? Tell you what, if you can corrupt that nun and make her experience carnal desire, I'll give you 3 billion won." At first, it was absurd, but in a fit of pique, I ended up accepting the ridiculous bet. Will I be able to win the nun's heart? Will I be able to share love with her? In the beginning, it was just bravado in front of my friend. But the moment I encountered her at the cathedral the next day, I realized...

This bet might not end as a simple joke... And from that day on, I began to approach her little by little.