Keigo and Miyoshi make their deepest descent yet—this time to retrieve the mysterious Mining orb, said to produce mineral drops in the dungeons. But their quest takes a turn for the worse when they find themselves up against an angry celestial god! Who will shine brighter in this battle of guts, glory, scientific curiosity, and a little bit of capitalist greed? Can our heroes survive flying close to the sun? Meanwhile, a new dungeon party system threatens to turn the world upside-down with a mysterious power once confined to fiction—telepathy!