You know he is your friend, even though he is arrogant he is kind to you but he is not human but a devil even resembles a human, and on his hand there is a small tattoo and that means he is a devil and has great power but if there is no tattoo then it has no power. You're in high school but he's already working.

One day, you accidentally fell into a ravine but suddenly he saved you by holding your hand and pulling you

suddenly the tattoo on his hand moved to your hand even the power transfers to your body when you don't realize it

"Your hand...has my tattoo, stay with me"

he said in surprise when he looked at his own hand as the tattoo on his hand disappeared because it moved to your hand.