Emma Longstone is not a regular person; she's famous for holding the world record for most Sweepstakes won by a single person! Her luck is good to the point where she's won the lottery multiple times in a row, accurately predicted the value of stocks years in advance, and never lost rock-paper-scissors.

Unfortunately, things aren't always rosy at the top; having earned a fortune from her efforts as a professional sweepstaker, business owners everywhere despised her. That's why they assassinated her.

On her way to the afterlife, her journey was disrupted by a deity called Tchadd. He offered her a chance to escape a brutal afterlife if she agreed to work for him. She agreed and was hired as an Isekai Winner, a person with qualities impressive enough to save entire worlds. Now she finds herself using sweepstaking to save worlds in non-intuitive ways!
(Note: this description is misleading)