The chapter opens in media res. The protagonist, — the clever but impoverished former support mage of the hero’s party — stands at the entrance of a long-sealed underground structure. The kanji used in the raw title is critical: 「初代王の遺棄遺跡」 . Note that 遺棄 (iki/abandonment/disposal) differs from the usual 遺跡 (iseki/ruins). This implies the ruins were deliberately discarded by the First King, not merely lost.
Chapter 461 will almost certainly begin with a direct dialogue between Ruri and the former Hero. The raws suggest that the Hero has been "hollowed out"—his pure stats and overwhelming power came at a cost. The gods’ blessing that made him a hero has been slowly erasing his personality, turning him into a puppet for a higher, destructive force. raw chapter 461 yuusha party o oida sareta kiyou binbou
As of this article’s writing, raw Chapter 461 is expected to release on [insert typical release day, e.g., "the second Monday of the month"] in Japan. English scanlations typically follow 3-7 days later. Warning: This write-up contains spoilers for Chapter 461