The Pact of Rainforest and Sands

In the deepest chamber of the Scarlet King's Mausoleum, Lumine brushed dust from a mural's faded star chart, revealing a hidden clay urn. Its surface bore strange glyphs—unseen cuneiform on the left, Oracle Bone Script from Kazuha's homeland on the right. The elemental compass screamed, its needle spinning wildly as the air rippled like *Interstellar*'s fifth-dimensional vortex. 

"Don't touch it!" Nahida's urgent warning echoed through Irminsul roots. "That's a spacetime rift from the Scarlet King's experiments!" 

Too late. Lumine's boot nudged the urn. As it rolled, the tomb began quantum collapse. The mural's Scarlet King turned, speaking in Kazuha's voice: "You've come at last, Outlander." Sand suspended into galactic spirals, each grain reflecting fractured timelines—Kazuha coding in a modern lab, Lumine battling the Abyss five centuries past, Nahida sealing Forbidden Knowledge... 

Lumine grabbed the urn. Amber liquid revealed a staggering vision—Kazuha, crowned as the Dendro Archon five centuries prior, painting star charts with his blood. Each stroke mirrored code from his unfinished *Teyvat Elemental Simulation Program*, the very project he'd been coding before dying in his original world. 

"You were always…" Lumine's voice broke as Kazuha recoiled in confusion. Since sacrificing his memories to free the Greater Lord, even her face meant nothing. 

The urn shattered. *Your Name*-style ritual wine mist engulfed them. Reality inverted— 

*Lumine became Kazuha*, fingers flying across a lab keyboard as star maps generated onscreen. Security feeds showed his original body flatlining in a pod. 

*Kazuha became Lumine*, driving a sword marked "Eternal Contract" through an Abyss Herald's throat. The constellations above matched the Scarlet King's diagrams perfectly. 

"The tomb's spacetime anomalies… they're code glitches!" Their voices echoed across timelines. Modern alarms blended with Teyvat's elemental storms as they witnessed the Greater Lord's fall—the figure removing the Dendro crown revealed Kazuha's face. He buried the ritual wine, carving Oracle script: **"To Myself in 500 Years."** 

Lumine seized Kazuha in the memory torrent: "This isn't轮回(reincarnation)—it's a Möbius loop!" 

The tomb's ceiling warped into *Tenet*-style inverted time. Nahida breached Irminsul's barriers, her hair woven with Orb fragments. Dendro threads formed a Klein bottle tunnel aimed at the spacetime rift. 

"Drink!" Lumine pressed the last drops to Kazuha's lips. 

Memories detonated like supernovae— 

*His soul sucked into the simulation program upon death.* 

*His past self as "Scarlet High Priest" encoding modern knowledge into ley lines.* 

*Lumine mending his dissolving consciousness nightly with elemental threads.* 

"The error's here!" Kazuha's eyes flashed data streams. A repair interface from his old program materialized, freezing the quantum rift. Reassembling star charts bloomed with Lumine's Padisarah patterns—their pistils forming his lost code. 

Nahida's Dendro sutured modern programming to Teyvat's veins. Scarlet King machinery harmonized with alien probes as crystalline Irminsul saplings grew along desert-rainforest borders. 

Seven days later, Port Ormos' Grand Bazaar unveiled wonders: 

*Rainforest treehouses entwined with mechanical arms, glowing roses blooming through gears.* 

*Floating pyramids embedded with *StarCraft*-style Khaydarin crystals.* 

*The blind box shop preserved in amber, *Your Name* wine bottles chiming as wind chimes.* 

Beneath Irminsul's projection, Nahida ignited countless Orbs: "This crossroads shall bridge Teyvat with infinite worlds—" 

*Eremite sand-ships mounted with *Nausicaä* gliders soared.* 

*Akademiya scholars collaborated with *Harry Potter* wizards on elemental converters.* 

*Desert children tossed shape-shifting candy blind boxes.* 

Lumine shook a newly brewed date wine, amber liquid swirling with ancient text: **"The lost shall reunite where destinies intersect."** 

"The bet still on?" She tossed Kazuha the bottle. "Three months dishwashing?" 

He caught it, finding his cross-temporal handwriting: **"May every soul become its own anchor."** Sandstorms swept the mausoleum as restored murals glowed—their figures standing united, countless blind boxes floating like stellar fireflies across Teyvat's multiverse.