{I decided to make both Paul and Bai fuse but as I already thought of how will go the novel if they separate, I will write a little summary in this chapter. THIS IS NOT PART OF THE ORIGINAL STORY, it's an alternative ending}
With bai's offer Paul will not directly accept, wanting to experiment Bai's resolution. Both will use their strongest techniques, Paul's will win the clash, but he will accept Bai's resolution.
The Sword God won't be happy about it, as a possible loss of his successor that would need to control all the sword types. The Sword God would influence the ritual, he would take control of Bai's sword, manifesting a rainbow Bai's in control of his spirits rings and a combination of the other personalities.
With Bai and Paul cooperation they would win against the controlled rainbow Bai, finally controlling each of them their All Sword, destroying their 7th ring and the God influence. Sword God would left saying that they will pay for it and regret.
After that they would try to find some way to accomplish their separation. After some chat with the other, Bai's mother having disappeared,They return to Star Duo Forest. Not before Xiao Wu gift them her immortal herb, saying that she already have San, she didn't need something as a proof of her love and that it would help them. The Immortal Herb instantly withering under Paul's influence, nevertheless, they keep it.
They will meet Lingling again and different spirit beast. Thanks to to their knowledge they would discover the ingredients needed. After some time, switching who was in control from time to time, they would travel obtaining the herbs, some of them thanks to their relation with Dugu Bo.
In all this time, it would be created a special relation between Paul and Lingling, both of them attracting the other, Lingling liking Paul's self more than the goody two shoes of Bai, and Paul being attracted by her who was able to stop his craving for death.
After obtaining all the materials, they would create a new body, only to realize that is not working. Paul was a creation of the Nine Sword, a cumulative of memories as such even if he is able to control the new body, he can't leave Bai's influence, the new body nothing different than a controlled sword by him, needing the main body near, not a true resurrection.
With Paul depression, he would Bai again this time the final one. In their fight they would be stopped by Lingling's aura. She will confess her feelings, not wanting neither her friend or loved to die.
Paul would be moved by Lingling, he also confessing his feeling towards her and at the same the Yearning Heartbroken Red would bloom accepting Pau as its master, accepting his love to Lingling. Thanks to the herb a miracle would occur completing Paul's body, becoming completely independent of Bai's, a true being.
After that, Bai and Paul will accept each other as true brothers, they will decide to separate each one searching for a way to become strong to face the powered Spirit Hall.
Bai would obtain the legacy of the lost Elemental God. Needing to gain control of the 7 elements, he will travel completing his trials.
Paul will return to Slaughter City, now empty but even more chaotic. He would cross it again, this time even more difficult, each step like a mental attack and finally he would be accepted by the Asura God and ordered to retrieve the Asura Sword.
Bai's last test, previous to take the Elemental God's legacy would be help Paul in his test. Both of them would go together to face against the Slaughter King, killing him without much problem.
The problem was that when Paul touch the Asura Sword that was corrupted by the Sword God who would try to take over Paul, destroying his mind.
Paul will win thanks to the final intervention of Bai as previous one, they can connect their mind spaces helping him win over the Sword God attack.
After that, Hei Qi would appear and take the Asura Sword. He would present himself as the Sword God, Hei Qi was only a doll controlled by him to manifest in this realm. Not only that, Hei Qi was only the armor and needed a body to sustain. Revealing that now under the armor stood Bai's mother, completely under control of the Sword God.
Forcing himself, Hei Qi is able to draw the Sword God divinity, becoming a god while Xiangxie's body could keep without being destroyed.
Paul and Bai would fight a hopeless battle where they didn't want to kill the rival and the rival was a lot stronger than them.
After almost dying, both of them made a spirit fusion with an only technique permitting to cut Xiangxie and Hei Qi's union. Then, both killing Hei Qi and destroying the Sword God's tablets and legacy, destroying the Sword God position.
Both of them will then face their last test of each god, succeeding their positions, Bai becoming a 1st class god and Paul a god king.
They will quickly travel to Heaven Dou Empire where a bloody Sea God Tang San stood under three gods, 1st class gods Bibi Dong and Yu Xiaogang and Qian Renxue who could cultivate her Angel God position to a King God.
Under Bai's insistence, Bai face a more powerful Renxue, while Paul with some Tang San help, face agains the other two.
In the fight, Bai improved his strength, upgrading to a King God and winning over Renxue, confessing his love feeling towards her and found them reciprocated.
On Paul's side, he win over them, but just before he was to kill them, he changed his aim only destroying their divinity and cultivation.
Finishing the battle and with Spirit Hall complete destruction. Bai weds Renxue, while Paul weds Lingling after some years they all ascend to the god realm, followed by Bai and Paul's family (They all have accepted Paul as part) and Tang San's friends.
For Xiaogang and Bibi Dong they stay without cultivation, they marry have a children and try to atone for their sins.
END
And that finish what would happen if they have decided to keep separated. What do you think?
This chapter was written with the mobile to sorry for some error that might be due to that. And there are some plot holes that are to be keep in the original novel, so better not tell anything. Thanks for reading, tomorrow I will try to continue the novel.