Thirty people individually draw one of the symbols of Jankenpo (Rock, paper or scissors) on a card. All thirty cards are put in a box where the players cannot see them. After betting, the players draw three cards each. Each player chooses one of their cards to face-off against their opponent. If both players choose the same symbol, that round is a draw and the players choose from their remaining two cards for another round. After three draws the game ends in a tie.
Mary challenged Yumeko on Yumeko's first day at Hyakkaou Private Academy. Each player was given 120 10,000 yen chips, putting 2.4 million yen on the table. Since Yumeko was new, Mary let Yumeko decide how much they were going to bet each game.
After the fifth game, Yumeko, having lost all of her chips, introduces 10 million yen to the game.
Yumeko ends the game with 8.6 million yen short of 20 million yen; resulting in Mary being indebted to Yumeko 8.6 million yen.
|Game no.||Bet||Yumeko's Card||Mary's Card||Yumeko's stack||Mary's stack||Difference|
|#1||2 chips||Rock||Scissors||122 chips||118 chips||4 chips|
|#2||50 chips||Rock||Rock||72 chips||168 chips||96 chips|
|#3||2 chips||Paper||Rock||74 chips||166 chips||92 chips|
|#4||50 chips||Paper||Paper||24 chips||216 chips||192 chips|
|#5||2 chips||Paper||Scissors||0 chips*||240 chips||240 chips|
|Final||10,000,000 yen||Scissors||Paper||12,400,000 yen||-8,600,000 yen||20,000,000 yen|
*Additional rounds which deplete Yumeko’s chips are not shown.
Mary cheats throughout the game. She is having Ryota Suzui, who is standing behind Yumeko, signal the symbols she would like drawn, to the other members of the classroom. 21 of the 30 people putting drawings in the box are in line with Mary's demands.
Yumeko figures this out by interchangeably making small and big bets. Mary is willing to lose two chips to disguise her cheating, but not fifty. Yumeko is sure Mary wasn't signaling the classroom, so she uses a hand mirror to find out what the symbol is each game and that it's coming from Ryota.
|Kakegurui main series|
|The Election • Finger Cutting Guillotine • Nim Type Zero • Active Station |
Greater Good Game • Tower of Doors • Hundred Votes Auction • Coin Flip of Fate
|Gin Rummy • War • Grand Tournament • Rock Paper Scissors Poker • Fasciation Hall|
|Speed President • Three Hit Dice • Magic Dice Game • Coupling Party • Even or Odd |
Treasure Hunt • Dice Nim Game • Test Battle Game • Doubt Poker • Hidden Rules
Peeping Tom Baseball Fist • Weight Guess Game • Little Max • Full Count Blackjack • Limit Dice
|Blackjack 1:1 • Hand Knife Trick • Guess the Card • Passive Russian Roulette |
Improvised Chinchiro • Chicken Circle • Hang Bingo • Kill or Die