Meikyuu Metro - Mezametara Saikyoushoku Datta Node Shima Risu O Tsurete Shinsekai O Aruku

Waking up a century in the future, Satoshi finds himself trapped on the dangerous fiftieth basement floor of the Otsuka Metro. In a Tokyo completely overrun by lethal mutant beasts and toxic super fungi, he must fight to survive. Alongside his loyal companion, a clever chipmunk named Tamiko, Satoshi discovers he can gain powerful skills by consuming the spores of defeated monsters. Together, this unlikely duo embarks on a treacherous journey through the subterranean depths to escape to the surface of a rebuilt, post-apocalyptic Shin Tokyo.