My Foster Brother's Dangerous Obsession

Summary

I just found out my younger brother is the male lead in a romance novel. According to the plot, on his eighteenth birthday, he's supposed to meet the female lead, and sparks will fly.

Refusing to be part of their twisted game, I hurriedly packed my bags to leave the country.

Learning I was leaving, the brother who usually acted so gentle sneered, trapping me in his arms with a look that was both sick and obsessive:

"Sister, I forgot to tell you... we aren't blood-related."