When in Love with the Devil (Free Serial)

A world where angels and demons dwell, a heavenly realm and a demonic realm exist. In the real world of South Korea, Yeo Ju-yeon, a high school senior mired in her studies, is struggling to answer a crucial exam. One day, she's struggling, when a voice suddenly reveals the answer. It's none other than Kwon Soon-young, the demon of the demonic realm. From that day on, she learns of the existence of the heavenly and demonic realms, and she falls head over heels in love with the demon Kwon Soon-you