A researcher on the earth has secretly developed a ghost - the Dark Messenger. The researcher has spent his whole life studying this project, and his purpose is to control the world. However, the first ghost is no longer under the control of the doctor. So the doctor developed a ghost without emotions. He is the one who succeeds and fails.
The Dark Angels reveal their true colors only at night; they disguise themselves as humans during the day; killing is their pleasure, and dominating the earth is their purpose.
The ring made of special materials by the wizard is the only thing that connects the Demon Control Academy and the real world; each Demon Controller has his own ring, and only the chosen one can control it.
Only those with a certain ability in their body can enter the Demon Control Academy. Ordinary people can neither see nor enter.
The situation that has not changed for hundreds of years has now undergone unprecedented changes due to the battle of the heroine and others; there is blood, love, and tragedy in it.
Intention: If you are not satisfied with your current situation, change it.