Chiharu was born in Tokyo, Japan alongside her twin sister ██, later known as Daichi. Neither knew who their father was, and their mother was a neglectful and emotionally distant alcoholic. The two essentially had to raise themselves, and as such, were closer to each other than anyone else. Though times were difficult, Chiharu still regards these days with a certain level of fondness.

 Everything had changed for the two when they had gotten stopped on the way home from school one day by a scout who offered Chiharu the opportunity to star in a commercial. Chiharu agreed, but only if Daichi was able to star with her. This was a turning point in both of their lives - once they got their foot in the door of the entertainment industry, it was as if they had both become sensations overnight. More offers came pouring in, only getting bigger and bigger in scope overtime as they moved up from commercials to dramas to blockbuster hits.

At first, it had been exciting. Chiharu had certainly enjoyed meeting new people and getting to experience all sorts of luxuries and opportunities that she would've never had the chance to before, and she enjoyed working with her brother. That was, until the first time that Daichi had lied. During that fateful interview that would change their relationship forever, Chiharu had sat frozen as Daichi spun a completely false tale with complete ease. Knowing she couldn't just call him out in front of everyone, she sat there and played along, even as discomfort settled in her chest. 

When Chiharu confronted him afterwards, he deflected. "What was wrong with a little while lie to keep the glamour alive?" was what he said said. Chiharu had tried to not look too unsettled.

Things continued onward like that. Daichi continued to pile up the lies more and more, to the point where even she didn't know how to keep up anymore. She had gotten into acting to escape the life she was living before, but now, she couldn't help but want to escape the lie of their life that Daichi had been so carefully building. She didn't want to be revered by the masses like some sort of untouchable god - if she could not even trust her own twin, once her only "truth" in this world, then all she wanted was to find someone who could understand her.

It hadn't taken long after that until Chiharu had quit acting. She told Daichi that it wasn't because of him, that it wasn't because she didn't want to help keep up the act that he had created, but just because she felt like she would fit better backstage rather than in the spotlight.

They both knew she was lying.

Life backstage as a makeup artist was definitely more fun, but as Chiharu found, not exactly more relaxing. There was nobody who saw her as a regular person, just on the same level as them - all of them had fallen for the glamorous lies that Daichi had spun and Chiharu herself had fuelled. Despair crept in as she realized that no matter what she did, they would both never be able to return to the normalcy of their old lives. She had sealed both of their fates the moment she agreed to step into the entertainment industry.

It had been no surprise that Daichi had been scouted by Hope's Peak as the Ultimate Actor, but Chiharu was a little more surprised when she received an invite too, as the Ultimate Makeup Artist. Though, when she thought about it, it was no wonder she had taken such a shine to the art form and grown so proficient so quickly. After all, even before stepping backstage, she had already been an expert at painting on masks - on both herself, and her brother.

And thus, she painted her mask back on her face again, and continued forward to the next stage of her life with a smile.