Reborn, I Give Up Saving the Beautiful Sisters

My senior brother and I found a pair of twin sisters in the human world. The older sister was unharmed, so my senior brother took her away. I brought the younger sister back, treated her wounds, forged her a sword, taught her swordsmanship, and passed my power on to her. Years later, during the war between immortals and demons, my senior brother and I were both gravely injured. I risked my life to pick the only flower that could save us. But she ignored my dying state and forcibly snatched the flower from between my fingers. "I'm sorry, but I want Eldest Senior Brother to live." At last, I understood that I had never been her salvation. The person she had wanted to follow all along was my senior brother. I bled to death. After being reborn, I returned to the day I discovered the two sisters.