A few holo members had mismatched voices with their models right after debut, but over time, it became fine and fit better, like Sana, Kiara, or Pekora in their early days. After a few months, their voices suited their models well.
However, even after almost a year, Su's voice and model still don’t feel quite right. She reminds me of Chima from Nijisanji, a loli model with a cool, mature voice, which feels jarring to watch during streams