Tsukasa revives Yo, a former police officer known for his strength. A flashback of Yo's previous life is shown. Chrome manages to go outside by using the need to excrete as an excuse, where he collects materials. Chrome mulls over the need of a battery in order to escape, however at night someone sneaks a battery into his cell. Chrome tries to use the battery to blow up the bamboo-gate, however Yo quickly stops it. Chrome exercises to use his sweat and make "sodium hydroxide" to melt the rope holding the bamboo together, consequently Chrome avoids the anti-vehicle traps and escapes. Yo corners Chrome, however Chrome fakes pneumonia and strikes Yo who was taken-aback, escaping to Senku's hideout.