Yong-Hyun Yan: Even though Yong-Hyun and Ji-Woo aren't members of the same organization anymore, they still can be seen as allies. That's because one of the reasons he left the S.U.C was to protect her.
S.U.C Comrades: Ji-Woo is well known for sadistic behavior and abused toward her comrades include Chang-Ho who is scared of her abuse.
Ji-Gun Yoo: She was defeated by him earlier when he interfered with S.U.C She seeks revenge, looking to kill him by any means necessary. Later, it is revealed that she has feelings for him.
Jin-Ie Kwon: After she witnessed the dual between Ji-Woo and Ji-Gun. Ji-Woo threatened to kill her, believing her know JiGun. After both of them denied knowing each other, Ji-Woo would attack Jin-le's cat, killing the cat in the process. Jin-le would then attack her retaliation, thus making an enemy out of her.
Shi-Woon Yi: As he is the main enemy of S.U.C, she has a strong hatred towards him.