Yume-Yume was soooo confident her victory was a lock with this idol gambling competition with Yumeko, she already planned details for her opponent’s future such as sleeping up the corporate ladder and having a porno debut. It’s not really personal; Yume is trying to get to the top of the celebrity mountain, and she needs stepping stones.
So it comes as a shock when Yumeko beats her , just because the competition included just enough luck to favor her over Yumemi. Yumeko’s luck is so conspicuous, it even gets in Yumemi’s head, as thoughts of Yumeko’s doomed future are replaced by the very real present possibility that rant recording will be played and ruin her career.
But here’s the thing: after handing over 50 million yen, and after Yumeko plays the recording to the entire crowd of 100—most of them in Yumemi’s fan club—and afterwards when she confesses and thanks those fans for cheering her on thus far…they don’t abandon her.
Of course they don’t, what self-respecting super-fan would be put off by the discovery of another layer of their idol? They love her unconditionally, and don’t ask for her love in return. In fact, they love her even more because she was honest!
Throw in the fact more than a few of those fans quite enjoy Yumemi yelling at them and telling them they’re scum, and you can see why there weren’t any shots of Yumeko’s reaction to their collective shrug: she too knew that real fans wouldn’t care about Yumemi’s rant.
Well, the game’s over, the money’s been paid, the ‘blackmail’ material backfired as planned, Yumemi’s idol career is safe, and she learned a valuable lesson. Time to SING! And hey, credit where it’s due: Kakegurui actually bothers to animate the two Yumes dancing and singing through the credits.
After that, Yumeko reveals the reason she fought Yumemi at all, besides the thrill of the gamble: she wants to have another gamble with a superior foe: Manyuda Kaede, the Sudent Council member who put the whole idol competition together.
When Kaede pleads innocence and demands proof he “deceived” Yumemi with the fan letter that set her off, Yumeko rightly points out they’re not in a court of law, but in a gambling school. She challenges him to a gamble in which the winner’s story will be deemed the truth.
Kaede refuses…but Yumeko to use her Miké tag to request an official match; one Kaede cannot refuse. Looks like Yumeko was using Yumemi as a stepping stone to Kaede, and eventually, the president herself.