Well Met, Everyone

A month after the carrier battle, Simon and Yoko visit Kamina's grave, a nodachi driven into a cliff above the volcanic ground where he died, his father's cloak wrapped around the blade. Simon tells his bro he can never be him, but there are things only Simon the Digger can do, and he promises to return once everything is over. Aboard the Dai-Gurren, crews rush repairs on the newly fitted levisphere.

In Teppelin, Lordgenome recites scripture about mankind's creation on the sixth day, and Guame takes the hint: the humans' sixth day of assault is the day to crush them. Cytomander leads with the Dai-Gunten while the King muses that he forced humanity underground for its own protection, and that only ignorance of the true threat lets them keep fighting; he calls their struggle pitiful.

The battle opens with the Dai-Gurren lifting off barely in time to dodge a missile salvo. Its Gunmen sortie on new flight engines, Kittan combining his machine with his sisters' units to charge the bombers. Then Guame's ground army arrives below, led by the fortress Dai-Gundo, and Simon splits the forces: everyone else meets Guame while Gurren Lagann faces the air fleet alone. Storms of miniature drills shred Cytomander's front line, and when the carrier's giant missiles fly, Rossiu turns one around to destroy the other. Reduced to his personal Shuzack, Cytomander has four soldiers pinion Gurren Lagann's limbs and moves in for the kill, his air force forming a living wall against the Dai-Gurren's guns.

Cannon fire from the east breaks the deadlock: an entire armada of Gunmen flying Team Dai-Gurren's flag. Their leader Bachon explains that Simon's victory over Guame was witnessed around the world, inspiring humans everywhere to steal Gunmen and rise up. The newcomers maul Cytomander's battalion, and the Dai-Gurren itself slams through the Shuzack into the Dai-Gunten, incinerating the general in the wreck. The burning carrier crashes onto Guame's flagship, which emerges untouched, then does something worse than fight: it burrows beneath Teppelin and spins, wrapping the capital in a tornado of energy that annihilates anyone who approaches. With communications severed and allies dying against the barrier, a projected image of Nia halts the charge, promising that Simon's drill is one that will pierce the heavens.

Simon is already underground. Gurren Lagann surfaces beneath the Dai-Gundo and heaves; Guame fires his reverse thrusters and slams the fortress down on top of it, but the impact drives the drill's tip through the hull. Reversing the fortress's own rotation, Simon bores through the Dai-Gundo and through Guame himself, who dies assuring his king that his humble servant is still spinning. The energy wall collapses with the fortress, and as the team readies its final advance, Teppelin's towers plummet away to expose a colossal face beneath.

Kamina's gravesite appears for the first time.

Cytomander and Guame both die, taking the Shuzack, Dai-Gunten, and Dai-Gundo with them.

Human reinforcements from across the world, inspired by Simon's earlier victory, join the battle for Teppelin.

Teppelin is unmasked as a gargantuan Gunmen, the Dekabutsu, and the Dai-Gurren gains flight through the salvaged levisphere.

The scripture Lordgenome quotes is plainly the Bible's creation account, in which man is made on the sixth day.

Gurren Lagann's all-directions missile barrage nods to the famous Ideon Spam from episode 14 of Space Runaway Ideon.

Bachon is built on the bancho delinquent-leader archetype, complete with school uniform and a piece of straw in his mouth; his name is an anagram of the word.