Initially, Mischa did not understand why Vega was blushing. She was old enough to drink wine, right? So.. what made her blush in embarrassment?
Finally, after thinking about it for a while, he realized what was in the girl's mind. Ahh .. Vega seemed shy to share a drink from the same bottle with Mischa because it would feel like they were having an indirect kiss.
Ahhh ... the man smiled to himself when the thought came to him. Vega must be feeling shy because she didn't have experience with men.
Because she lost six years of her life, some aspects of her life were lost too. Vega moved from that 16-year-old girl who had never been kissed to now a 23-year-old girl without the memory during her early adulthood.
This girl certainly didn't remember having kissed anyone or being in any intimate relationships in her previous life. That part of her was long gone and forgotten.