Demon Slayer: React to Shangxian Er and Tame Him in Reverse

After traveling through time and becoming a sacrifice, Hotaru Himura put a collar called "Pain Sensing Empathy" on the emotionless murderous demon child Mo, in order to survive. If you hurt me, you will feel pain; if you kill me, you will die. At first, he treated her as a fragile object just to avoid pain. Later, he knelt in a pool of blood and kissed her wound devoutly: "Xiaoying, as long as you live, I am willing to love you for the rest of my life." This is a story about a monster who doesn't understand love and learns to love through pain. Features: Two-way redemption + extreme pulling + sweet and sad interweaving Biographies of characters: Male protagonist (Tong Mo): The leader of the Eternal Bliss Sect, born with a lack of emotions. Through the heroine, he gained the sense of pain, taste and temperature, and eventually evolved into a perfect creature, becoming a clingy spirit who couldn't live without his wife. The heroine (Hotaru Himura): Immortal, calm and rational. Use pain to tame the beast and fill the empty shell with love.