The reforged Tessaiga had shed its traditional katana form. It now stood as a straight longsword, styled after the elegant blades of Liyue, but with a shimmering silver-white edge. Its scabbard was inlaid with materials the color of Ruo-Ruo's deep-earth scales.
The blade retained all its previous transformations, but now it held the primordial weight of the Dragon King.
As Su Han gripped the hilt, the blade began to pulse with a four-colored light. It no longer required a manual switch between forms; the powers of the Kirin, Magic Dragon, Thunderbird, Wolf King, and the Meido (Underworld) resided in the soul of the steel simultaneously.
With Ruo-Ruo's essence integrated, the blade could now command the four elements of the Earth: massive frost freezes, tectonic meteor strikes, hydro-vortices, and pillars of lightning.
"How does it feel?" a voice asked.
"Powerful," Su Han smiled, looking at the little girl beside him. "Thank you, Ruo-Ruo."
"Hmph! You're good to me, so I'm good to you," the Dragon King pouted, though her eyes twinkled. "I'm going to eat chicken legs now. You guys have fun."
As she skipped away, the Raiden Shogun watched her with a soft expression. "That girl... her temperament has improved significantly. With the spiritual energy here, she'll likely return to her adult form soon."
[The Spirit-Sword Integration]
Su Han didn't waste a moment. He sat in meditation, performing the first stage of the Spirit-Sword Kinesis. He drew the Tessaiga into his body, merging the physical steel with his Primordial Spirit.
Fifteen minutes later, he opened his eyes. A silver flash erupted from his pupils.
The Tessaiga's powers manifested all at once—gravity, underworld rifts, and elemental storms swirled around him in a chaotic, yet controlled harmony. His strength hadn't just increased; it had multiplied.
The Shogun watched him, a hint of envy in her eyes. "Can Ei cultivate this as well?"
"She can," Su Han replied. "But Musou Isshin contains her sister's soul. She likely won't want to merge it until Makoto is fully revived. Otherwise, Makoto wouldn't have a weapon of her own."
This posed a problem: Ei and the Shogun currently shared one body and one blade. "I'll have to find or forge another weapon for you," Su Han promised. "A warrior of your caliber can't be left empty-handed."
[The Sovereign's Bounty]
Su Han opened the All-Heavens Mission Group interface. He had been so busy with the "Sword Peak" that he hadn't checked his own rewards for Zhongli's successful promotion mission.
[Ding! Member Zhongli completed a Five-Star Mission. Reward for Group Leader: 300,000 Points.]
[Ding! Group Leader Reward: The Twin Celestial Swords of Taiyi Yin-Yang.]
Two legendary blades materialized in the air—the Riyue (Sun-Moon) Swords. They were the original source from which the Emei Sect had derived the "Twin Sword Merge" theory, though the mortals had never grasped their true essence.
Yuehua (Moonlight) Sword: A blade of pure Taiyin (Lunar) energy.Riyue (Sunlight) Sword: A blade of pure solar essence.
The swords were soul-bound. If a couple used them together, their hearts would become perfectly synchronized, and their combined power would be capable of shattering all illusions and returning the world to the primordial force of its creation.
"These are for you, Ei," Su Han said, handing the Yuehua Sword to the purple-haired goddess as she manifested.
"Is this... fate?" Ei whispered, gripping the hilt.
The Shogun's voice echoed from within. "Don't get too smug. Our souls are identical; I can use that blade just as easily as you."
"Stay back! This is Su Han's gift to me!" Ei countered.
"Are we really pretending there's a difference?" the Shogun teased. "Have you forgotten that I'm the one who usually—"
"Enough!" Ei shouted, her face turning crimson as she cut the puppet off.
[The Integration]
As Ei and the Shogun both imprinted their souls onto the Moonlight Sword, the weapon dissolved into silver light and entered their body. The effect was immediate—Ei's spiritual strength surged by ten percent.
Su Han, meanwhile, refined the Sunlight Sword. A searing, golden heat flooded his meridians. His internal "Golden Core" began to crack, but instead of forming a Nascent Soul, it transformed into a miniature, rotating sun.
Through the link of the twin swords, he suddenly felt Ei's thoughts.
"I'm hungry..."
"I want Dango Milk..."
"I'm so happy Su Han did this for me..."
"I want to be the 'Night Rider' tonight to repay him..."
Su Han coughed. Ei, you're very honest.
[The Great Convergence]
"Let's try it," Ei said, her eyes burning with excitement. "I want to see the power of the Merge."
They flew out over the Sea of Clouds to ensure the shockwaves wouldn't damage the Jade Chamber. Below them, the people of Liyue looked up as the sky began to change.
"Yuehua Sword!"
A massive, chilling full moon manifested behind Ei, turning the lightning around her into pure lunar energy.
"Riyue Sword!"
The dark night was suddenly split by a second sun. Su Han's aura turned into a blinding solar flare.
As their hearts beat as one, they shouted in unison: "TWIN SWORD MERGE!"
The Sun and the Moon began to spiral toward each other. The clouds were torn apart like wet paper, and even in distant Liyue Harbor, people watched in awe as the two celestial bodies prepared to collide in the heavens.
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