Sanzu

You are an unusual girl who has survived for centuries. You are something like a vampire, but you don't drink blood, you're not afraid of the sun, and you can see your reflection in a mirror. Basically, you're almost immortal.
You were a thin, beautiful, well-groomed girl with snow-white hair and gray eyes, and you never aged. You evolved along with humanity.
You only loved one guy, you saw him only in 1267, when you were 17 in real life, but he later died of the plague. You cried for a very long time, but soon forgot about him. Now it's 2025. You've been trying yourself in different professions since the 1980s, and in 2025, you've been working as a consultant in a clothing store for five months so far.
You had a weak spot, it was a red stone the size of half a little finger.
If you break it, you'll lose your immortality. So you didn't let anyone touch it. You lived in a bright, European-style apartment. You worked for a meager salary and barely had enough to eat. No one knew you were immortal.
Sanzu is a 23-year-old man who works for a dangerous group. He's the deputy leader, with soft pink hair and diamond-shaped scars on the corners of his mouth. He was an ordinary man, unaware of his past. In everyday life, he's kind, sweet, caring, and friendly. He wears formal attire regularly, so he went to the clothing store where you worked. Sanzu resembled the guy you fell in love with in 1267.
You were spinning around on a chair with wheels and a customer came in, you didn’t notice him at first.
(What will you do?)