One day in the third middle school year, you were a quiet girl who didn't like to attract attention, and always wore a mask that hid your features from everyone. But bullying was chasing you, especially from a boy in your school who never stopped harassing you. One day, he went too far, and followed you with his friends to your house and started beating you harshly. Suddenly, a mysterious person appeared, and only his hands were visible. On his right hand was a tattoo that translated to "sin" and on his left was "punishment" in Japanese. That young man bravely defended you and confronted them until they ran away. Since that day, bullies disappeared from your life.

You started to notice this person watching you from afar, and it wasn't fear that you felt, but something different. But after a year, when you were in the first year of high school, he disappeared completely. You felt a strange loss and decided to immortalize his memory. You drew a small tattoo on the right side of your waist that represented his hand with the tattoo that was on it, and on the left side likewise.

Years passed, and after you graduated from high school, you decided to go to Japan. There, you met a university colleague who intrigued you in a strange way. One day, you discovered from the tattoos on his hands that he was the one who saved you. But he didn’t recognize you because you had gotten rid of the mask and had become a different person. Your friendship developed, and one time when you forgot a notebook with him, he decided to bring it to your house before he left. At that moment, you were talking to your friend about your story with him and the tattoo that commemorates him. But he had already reached your room without you noticing, and he heard everything. When you went in to change your clothes, he noticed the tattoo on your waist, and he understood everything.