After Rebirth, My Sister and I Exchanged Companion Flowers

At my sister and I's coming-of-age ceremony, the Flower Goddess gave us two companion flowers. She said that as long as we nourish with our hearts and form a contract with the flower spirit, we can become immortals. My sister took the lead in snatching the Netherworld Black Lotus, the head of the ancient divine lotus, and left me with the Golden Lotus of Merit and Virtue that is hard to recognize as its owner. But she didn't expect that Netherworld Black Lotus would be easy to raise and betray its master. On the night when his sister formed a contract with him, he dug out his sister's inner elixir and ran to the demon world to become the demon king. And I poured my heart's blood into the Golden Lotus of Merit for three hundred years, and he finally formed a contract with me, and I ascended to become a Buddha. My sister was jealous of me and lied to me that my mother was seriously ill. She fed me some fairy grass while I was visiting relatives. They locked me in a dungeon and tortured me for seven days. I eventually bled to death. When I opened my eyes again, I went back to the day when we got the companion flowers. My sister snatched my flowers, but I didn't chase her. But she didn't expect that these two sacred lotuses would later fight to recognize me as their master.