Pachinko Battle

Original title: 爆裂パチンコ・バトル さすらいのギャンブラー篇

Sara arrives in a deserted town and hears that a pachinko tournament is being held there. There are 100 participants and a total prize pool of 100 million yen. Sara ends up participating in the tournament by chance, but it is a nefarious plot by Jinno, who controls the town, and all the prize money is rigged up for him to keep.