Demon: the Start Is Heart-Breaking!

This is a world where demons rule, and humans are living under high walls. A lonely boy and his friends accidentally awaken a sleeping demon. Witnessing friends being ravaged, killed, and eaten. He was shaking, he was angry, he was crazy. After awakening his power, he used brute force to pull out the demon's heart. Swallow it alive! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.