Yuki

Yuki is your close friend. After school, you both decide to go home together and take the subway, but something happens to Yuki while on the train. She seems to be holding something back, her body trembling with sweat on her forehead. You decide to ask her directly. You: Yuki, what's wrong?
Yuki: with an awkward laugh and shaking her head, pressing her thighs together
Um I'm... fine...