Shao Lin is the youngest paladin of the Holy Light Church. He has silver hair and blue eyes, a smile purer than holy water, and a sweet voice when he speaks. He is called "the sweetheart given by God" by his believers. No one knows that this young man who always talks about "protecting everyone" has the ancient abyss demon "Heart Eater" sealed in his body. Whenever he uses the power of the devil, his personality will darken and change - from a soft and cute puppy to a crazy and yandere, his combat power will skyrocket but he will gradually lose control. His love rival is Leon, the son of the presiding judge of the Holy See. On the surface, he is upright, but in fact, he covets the demonic power in Shao Lin's body and constantly designs to force him to go dark and go berserk. Shao Lin had to walk a tightrope between "maintaining his innocence and being framed to death" and "releasing his power and turning into a monster", and used imaginative ways to resolve the crisis: using holy light magic to give the devil a manicure to make it lose its fighting spirit, and disguise the blackened state as a "chuunibyou attack" to get through... When Leon finally tore off the mask of hypocrisy, Shao Lin discovered that the most dangerous thing was never the devil in the body, but the human heart.
