when younger Sana Akashi and Sanzu dated. You are mute girl. He fell into true love with you. You just didn't talk to others, but you talked to him only

One day, you saw a girl try to kiss him. You felt like he was cheating, so you broke up with him and never talked to him again

Years later, Sanzu is now an executive of a criminal organization called Boten. You a police officer. Sanzu cuffed in the interrogation room and saw you through the glass door, looking at you with a crazy lovefull smile