In , titled "A Flimsy Alliance" (or "A Tenuous Alliance"), the story focuses on the mentalist Gen Asagiri and his crucial decision to switch sides from Tsukasa’s Empire to Senku’s Kingdom of Science . Key Plot Points
Gen returns to Tsukasa’s headquarters and reports that Senku is dead , effectively buying the Kingdom of Science more time to prepare for the inevitable conflict. Dr. Stone Episode 10
It is revealed that Magma wants to win the upcoming Grand Bout , a tournament to decide the next village elder. Winning would allow him to marry Ruri , the current priestess, but his true goal is power; he even plots to eliminate Ruri after the marriage. In , titled "A Flimsy Alliance" (or "A
Watch this comparison of the anime episode and its manga origins to see how Gen's brush with death was adapted: Winning would allow him to marry Ruri ,
Before returning to Tsukasa, Gen asks Senku if he can recreate cola in the Stone World. Senku promises to do so, knowing this modern luxury is the ultimate bribe for the "superficial" Gen.
While Gen is staying with Senku, he is brutally ambushed by Magma , a powerful warrior from Ishigami Village who mistakes Gen for the "sorcerer" (Senku). Gen survives the lethal-looking attack by using hidden bags of fake blood to deceive his assailant.
To prevent Magma from winning and to save Ruri's life, Kohaku begins training Kinro and Ginro for the tournament. Chrome, though initially jealous, sets aside his feelings to focus on helping Senku develop a scientific cure for Ruri’s illness.