Junior Sister Always Wants to Destroy Me Ruthlessly

[Tentative first person, may be changed to third person later] The person I hate the most is my junior sister. She is extremely talented, and every time I compete, I am defeated by her sword. I practiced sword moves over and over again late at night, and she said, Senior Sister, it's time for you to rest. She has really bad intentions and doesn't want me to work harder than her. I cultivate the path of ruthlessness, she said, and you can only see through love after experiencing the calamity of love. I went down the mountain to experience the calamity, but she insisted on following me. She must have deliberately ruined my good deeds, fearing that I would be more powerful than her after I succeeded in the disaster. * The junior sister turned out to be a remnant of the demon clan. Under siege by everyone, she was seriously injured, and I was ordered to guard her. She said that she was lucky to die under the sword of her senior sister. I know this is her gentle way. I let her go privately. Not because I'm soft-hearted, but because I haven't defeated her yet and she can't die. I made a big mistake and Master punished me for three years of reflection. At the end of the three years, I went to the demon clan alone, determined to defeat my junior sister. She said, Wu Xingjin, you shouldn't call me junior sister! This is really unreasonable! It was me who picked her up from the snow and took good care of her, but now that I have become a demon, I won't even let me call her junior sister. * I was defeated by my junior sister's sword once again. When I woke up, I had no memory and only my junior sister was by my side. She said she was my wife. I love her very much and she loves me very much. We spent an ordinary day. Master came over and helped me regain my memory. My skills are even stronger than before, and I go to the demon clan again. But the junior sister showed up with a pregnant belly. She said, do you hate me? Baffling. I just want to beat her. Junior sister's cultivation level has been greatly reduced due to pregnancy. I want to wait until she regains her strength after giving birth before fighting her in a decisive battle. So I stayed in the Demon Clan. She said that demons have a dual cultivation method to improve their cultivation. I despise this kind of underhanded tactics the most in my life. She lay on my bed and begged me softly. The reason why I agreed was so that she could give birth to the child smoothly, and then I defeated her! * I still couldn't defeat my junior sister. I wanted to compete with her, but she would either have a heartache or a headache, and she would always pull me to the bed in the end. She said that when she is satisfied, it is the time when her cultivation is at its highest. It's obviously a lie. Which time did you not say that you have no strength after being satisfied? Let's compete next time! Junior sister's perspective: Master warned me before going into seclusion not to harm senior sister's ruthless ways. I said, I will let my senior sister fall in love with me and then kill me to prove the truth! Master looked at me like a madman. All she wants to do is become stronger and the heartthrob beauty Qiang Gong* is the strongest yandere in the world who is suffering from love problems. The main attack is strong, and the attack is stronger. Disgust is fake, the essence is mutual favor. Intention: Work hard to become stronger.