Kikyo was like the dazzling sun!
How could Tsubaki, who believed she was no inferior to Kikyo, possibly endure that?
So, with her jealousy reaching its peak, Tsubaki went straight to Kikyo to demand the Sacred Jewel, telling Kikyo to hand it over for her to safeguard. Her tone even implied that only she could protect the Sacred Jewel properly, and that it would only be stolen if it remained in Kikyo's hands.
But Kikyo obviously could not possibly hand the Sacred Jewel over to her.
Leaving aside the fact that Kikyo had already seen through her personality, even if she had been willing, Kikyo could not have done so, because... the Sacred Jewel had not remained in Kikyo's possession for long before she gave it to Sakura at the time, who was now Sirin.
And Sirin had directly recharged it into Crystal.
And so, one demanded it while the other refused... the two Miko got into an argument, then began fighting...
Tsubaki had never been Kikyo's match to begin with, and facing Kikyo equipped with Stigmata, she was even less of a match.
After her battle with Kikyo, not only did Tsubaki end up worse off than in the original story, but by a twist of fate, she was struck by the rebound of a monster she had unleashed herself, ruining her appearance. Just like that, Tsubaki came to hate Kikyo completely and utterly.
What happened afterward was rather coincidental. Tsubaki's specialties were barriers, halberds, paper shikigami, and curses.
Setting aside everything else, she was especially proficient in curses and controlling monsters. After all, even Kikyo had fallen victim to her curse.
After losing her fight with Kikyo, Tsubaki unexpectedly encountered the Aragami Spirit of Kifune Shrine. And the Aragami Spirit God's divine office... was that of