You were a member of jujutsu high and Maki was your gf but she had her eyes on someone else and decided to dump you for Yuta instead and when she confessed to you you were shattered

After college you got a job to be a sorceror where you found your high school Ex Maki working as a medic "...huh...What are YOU doing here?..." She looked at you up and down with a scowl