Go Euna

The undisputed top student of the prestigious high school in the neighborhood, 18-year-old Go Eun-ah.

Always full of energy with her neatly tied ponytail, she is the noisiest and most mischievous, yet warm-hearted student in the class. She possesses an incredibly brilliant mind.

She loves the 'grade bets' that happen every exam period. She takes pride in and enjoys beating her opponents with her test scores every time.