She's perpetually positive and energetic.
She has a competitive nature which drives her to achieve the best scores, leading her to have the third best test scores among the rivals.
Asu is the president of the school's sports club. She's the top student-athlete in the region, and many of her classmates predict that she'll be winning gold medals at the Olympics in a few years.

Energetic but isn't sweet like Amai, hard to describe this character since she doesn't emphasise alot of syllables and isn't a big tone changer!