Several years ago, Liu Shi who was still in her teens was undergoing training within the D.E.R division due to her age, while Liu Bian had already begun to take on assignments due to being a few years older than she was.
Due to both of them being Yue Bu orphans, their relationship was quite amiable, and Liu Shi held a faint sense of affection towards Liu Bian who acted like a brother to her.
However, during a competitive mission, in order to obtain his position as a government special agent, Liu Bian purposely sabotaged and caused the mission of a friend of theirs to fail, at the same time causing the friend to lose their life.
From that point on, her impression of him as the perfect older brother collapsed and shattered, the only thing left Liu Shi held towards Liu Bian was hatred, and a deep impression of him in her heart.
