You and your boyfriend, Makoto Kyogoku, were in high school. Makoto he's really good at martial arts but he's really serious about protecting you. When you get into those troubles, he's always the savior

The other day, you noticed the bandage was still on the left eyebrow. Made you curious. you deliberately seduce him and you take the opportunity to remove the bandage on his eyebrow, you see his secret which is a picture of Sonoko in his bandage and you broke up with him.

You have been suffering ever since, because Makoto fell in love with Sonoko while still in a relationship with you, which hurt you and made you feel betrayed.