For many years, it seemed that the life Yi-Min was destined to live was a charmed one. Her father, a former officer in the Republic of China Armed Forces whose own father had participated in the Chinese Civil War, married prosperously after retirement and became the head of a wealthy, healthy household in Taipei filled with many cherished children. Of these, Yi-Min and her twin brother Yi-Shan were but two. Though she had many siblings of varying ages, she naturally grew up closest to her twin: the two were inseparable, often personally competing with each other in a friendly sense to see who could do everything better, even if (or precisely because) the issue was silly and trivial. Their parents were both extremely strict, but no moreso than was the common cultural norm, and overall Yi-Min led a fulfilling if busy childhood.
A jarring set of circumstances when Yi-Min was twelve served as a forewarning, however, against the notion that she would ever enjoy a normal life. One sweltering summer night, as Yi-Min and Yi-Shan slept in the bedroom they shared in their family's spacious high-rise apartment, unbeknownst to her family a gas leak had sprung in the apartment and the residence began to fill with carbon monoxide. As sunlight crept into the windows in the morning, Yi-Min awoke in the hospital and learned that she and her brother both nearly died the previous evening, but were discovered late at night by their father and rushed to the hospital.
Following their miraculous survival, Yi-Min and Yi-Shan only grew inseparable. They believed themselves singularly blessed to have survived and saw to it that nothing would ever separate them again. Yi-Min and Yi-Shan went everywhere together, looked out for one-another, and always kept one-another in their thoughts. Their sibling bond was unbreakable.
When Yi-Min was seventeen years old, she was accepted into the National Taiwan University: a prestigious honor. The sheer size and vivacity of the school meant that her naturally outgoing nature helped her fit in and she excelled there as a student. After NTU, she went on to enroll in a PhD program at Xiamen University's College of Chemistry and Chemical Engineering across the strait. Once finished there, Yi-Min shocked her parents by announcing to them that she intended to sign up for the military instead of taking advantage of her new degrees— a decision both of them questioned, for good reason. Yi-Shan had made a similar decision and Yi-Min stood united with her brother that they would never be separated. Both of their parents disapproved greatly at first, as they wanted Yi-Min to continue down a path of pursuing scholarly success. However, her father at least eventually relented when she revealed that she was doing this because she wished to follow in his footsteps, like her brother.
Thus began her years serving with the Taiwanese Armed Forces. Yi-Min's time in the military nearly came to a violent end thanks to one incident: a containment failure in a military facility in Penghu caused a leak of CS gas in storage, injuring the three workers on site and herself. Though Yi-Min's injuries were not significant, her brief hospitalization was enough to draw her brother back to her side. Yi-Min struggled with her competing desires to remain in the military to follow alongside her brother instead of her own scholarly pursuits. Yi-Shan revealed that while he was serving, he met an American traveling abroad who was hiring private security while in Taiwan. Yi-Shan accepted an offer from Daniel Linderman to move to America, and encouraged his twin sister to join him.
Leaving Taiwan was challenging for Yi-Min and her brother, and the departure was met with some disapproval from their parents. Though the determination of the twins to stay together no matter the cost was abundantly clear to all of her family by this point. In 2005 Yi-Min and Yi-Shan immigrated to the United States and took up residence in New York. Initially Yi-Min and Yi-Shan lived together, and it was through this arrangement in 2010 where she met a colleague of her brother's, a personal security officer in the Linderman Group named Kara Prince. Yi-Min and Kara hit it off immediately and it became clear that the pair's interests were romantic. Yi-Shan was thrilled for his sister and encouraged the two at every step of the way.
Yi-Min and Kara's relationship was a rocky one, fraught with personal struggles and intermittent breakups, but by the time Yi-Shan transitioned from a security role to public relations, Kara was also looking to retire from the Linderman Group with a sizable stipend. She proposed to Yi-Min On September 8th, 2016 and though Yi-Min accepted, the two have never been able to settle on a date to actually marry. In 2017 they purchased the Rose & Trellis, a small florists in Brooklyn, and maintained the business as a hobby while Yi-Min pursued a late-life master's degree in chemical engineering at Columbia University.
The seemingly idyllic life these two shared was upset in the summer of 2020, when a severely injured Yi-Shan Yeh appeared on their doorstep suffering from a gunshot wound to the abdomen. Yi-Shan refused to be taken to a hospital immediately, and was forced to reveal to Yi-Min and Kara that his work for Daniel Linderman was not in private security or public relations, but that he was effectively a hitman and was nearly killed while on an assignment. The revelation came as a shock to both Kara and Yi-Min, and though Yi-Shan was eventually able to be moved to a Linderman-controlled hospital, the revelation of her brother as a hired killer changed Yi-Min's perceptions of her life and the world she lived in.