As the name suggests, the Demon Knight is a demon knight. He looks like a holy knight. He wholeheartedly protects those who need to be protected with his life, and he is willing to pay any price for this. Then when the emotions are too excited, they will transform into extremely powerful demons after encountering stimulation. The owner can control the terrifying power of darkness, which is enough to destroy all obstacles.
When everything is over, will he, the Demon Rider, get what he wants? Will he be moved by him? Will you give him love? He would still deliver a fatal blow without hesitation, leaving him invincible.
This article is slightly cruel, but the early stage is warm. The protagonist is awesome, but also very fragile, so the golden finger thing is absolutely necessary.