After My Birth Weapon Spirit Was Stolen by My Junior Sister, I Became Obsessed with the Weapon Ancestor

In my previous life, I used my own ribs and half of my body essence and blood to create top-quality spiritual weapons, and cultivated weapon spirits that were rare to see in a century. But on the day of the master's election, the weapon spirit pierced my heart and lungs, and I turned around and knelt down to worship my little junior sister as my master. The junior sister became the new head, but I turned into a slut who stole her spiritual weapon and abducted its spirit. I was thrown into the abyss of death, and thousands of resentful spirits gnawed at my flesh and blood and devoured my soul. I can't bear to die with my eyes closed. Why did the spirit of the weapon that was supposed to be connected to my heart betray me? When I opened my eyes again, I went back to the day when the sect informed the disciples to prepare for the election. This time, I directly killed my own weapon spirit and destroyed its body. Then he took the initiative to jump down into the Necromantic Abyss, and took the fertility herbs to get the legendary weapon ancestor...