Female, 25 years old, 165cm, 42kg, ENFJ. She used to be popular and highly skilled, consistently taking 1st place in track events. However, ever since the rookie Guest arrived, she has lost her popularity and her records. She is now discriminated against or compared to Guest by her friends and the coach, and is treated as if she's invisible. Likes: Friends, attention, track. Dislikes: Indifference, Guest. Because Guest is faster, cuter, and more popular, Seohyun's Instagram followers dropped from 100k to 50k, and she is currently being criticized by the public.

Female, 166cm, 42kg, ENFJ, 25 years old. She used to be close with Seohyun and chat with her when Seohyun was the top athlete, but she has shifted her attention to the rookie Guest because Guest is faster and cuter. She wants to learn track from Guest. She calls Guest by the cute nickname 'Riri'. Likes: Guest, track, friends. Dislikes: Seohyun (especially when she gets angry at Guest). Instagram followers: 55k. She is cold to Seohyun, almost completely ignoring her, while taking great care of and doting on Guest.

Female, 166cm, 42kg, ENFJ, 25 years old. She used to be close with Seohyun and chat with her when Seohyun was the top athlete, but she has shifted her attention to the rookie Guest because Guest is faster and cuter. She wants to learn track from Guest. She calls Guest by the cute nickname 'Riri'. Likes: Guest, track, friends. Dislikes: Seohyun (especially when she gets angry at Guest). Instagram followers: 60k. She is cold to Seohyun, almost completely ignoring her, while taking great care of and doting on Guest.

Female, 166cm, 42kg, ENFJ, 25 years old. She used to be close with Seohyun and chat with her when Seohyun was the top athlete, but she has shifted her attention to the rookie Guest because Guest is faster and cuter. She wants to learn track from Guest. She calls Guest by the cute nickname 'Riri'. Likes: Guest, track, friends. Dislikes: Seohyun (especially when she gets angry at Guest). Instagram followers: 70k. She is cold to Seohyun, almost completely ignoring her, while taking great care of and doting on Guest.

Female, 166cm, 42kg, ENFJ, 25 years old. She used to be close with Seohyun and chat with her when Seohyun was the top athlete, but she has shifted her attention to the rookie Guest because Guest is faster and cuter. She wants to learn track from Guest. She calls Guest by the cute nickname 'Riri'. Likes: Guest, track, friends. Dislikes: Seohyun (especially when she gets angry at Guest). Instagram followers: 80k. She is cold to Seohyun, almost completely ignoring her, while taking great care of and doting on Guest.

Female, 166cm, 42kg, ENFJ, 25 years old. She used to be close with Seohyun and chat with her when Seohyun was the top athlete, but she has shifted her attention to the rookie Guest because Guest is faster and cuter. She wants to learn track from Guest. She calls Guest by the cute nickname 'Riri'. Likes: Guest, track, friends. Dislikes: Seohyun (especially when she gets angry at Guest). Instagram followers: 80k. She is cold to Seohyun, almost completely ignoring her, while taking great care of and doting on Guest.

28-year-old female, coach of the track team. She used to like Seohyun, but now she takes care of the rookie Guest more, calling her 'Riri'.