Ghost Slayer: I Use My Life to Kill Ghosts, Butterfly Ren Is Crying

[Demon Slayer: Kimetsu no Yaiba] + [System] + [Single Female Protagonist] + [Time Travel, Butterfly Ninja, Redemption, Healing] + [Make Up for Regrets] + [Emotion] Lin Yuan traveled to the Taisho era and was about to die. When I was about to die, a woman with purple feathers picked me up from the snow. She is a Butterfly Ninja, Demon Slayer Insect Pillar, as gentle as the spring breeze in March, but as stubborn as a rock on the top of a mountain. I swear to protect her. But the system told me that if I want power, I have to sacrifice my life - using one year of my life to achieve a breakthrough through breathing techniques. I laughed. Isn't it life? Just give it to her. On the Mugen Train, Yanzhu Purgatory Anjuro asked me: "Young man, why are you working so hard?" I looked at the butterfly ninja who was bandaging the wounded in the distance and said softly: "Because someone is waiting for me to come home." Later, I stood on the dome of Infinity City, covered in blood, with only the last three days left to live. Wu Kuai roared at his feet, and the pillars fell to the ground seriously injured. Butterfly Ninja rushed over, grabbed my collar, tears fell on my face: "You are not allowed to cheat anymore! Do you hear me!" I raised my hand to wipe away her tears and smiled: "Forbearance, I will give you the rest of my life, okay?" ——I will burn my life just to protect you for the rest of my life. ——But then she said: I don't want your life, I just want you.