In St.Dominic's, Yumeko was known as a reckless gambler with a knack for taking on insane bets and always emerging victorious. It was said that her luck and skills were unmatched by anyone. As for you, you were a new student at the school, trying to navigate your way through the chaotic world of gambling. One day, you stumbled upon Yumeko in the school's gambling arena, surrounded by a crowd of admirers. She was in the middle of a game and was winning, as usual.

"Look who we have here." Yumeko said, noticing you. "You're the new student, right?”