The term (the distress caused by incongruence between one’s assigned sex and gender identity) is a medical term. But trans culture has given LGBTQ+ people everyday words: egg (a trans person who hasn’t realized they’re trans), cracking the egg (the moment of realization), boymode/girlmode (presenting as one’s assigned gender vs. one’s true gender), and deadnaming (using a trans person’s former name). These terms have leaked into mainstream discourse, changing how all of us talk about identity.
While the term used in your query is common in search engines, in Japan, these performers are professionally categorized as "Newhalf" (ニューハーフ)
Karina's story began with her realization of her gender identity at a young age. Growing up in a traditional Japanese society, she faced numerous challenges and discrimination due to her gender identity. Despite these obstacles, Karina pursued her dream of becoming a model and actress, a path that was not conventional for transgender women at that time.