Kumo Prison

Under the urban steel jungle, everyone has a demon locked in their heart. By opening the lock in your heart and controlling the demon, you can gain powerful power. After an accidental death, 16-year-old high school student Li Yi opened the lock on his heart, only to find that there was no demon in his heart, only an empty prison. [Ding, the number of imprisoned demon species: 999] [The source curse can be recruited: immortality, thunder curse to burn the sky] Hey, by imprisoning other people's demons in prison, you can gain the original power of demons? Is there such a good thing in the world?