What Should I Do After Finding My Amnesiac Archrival?

Blurb One: Shen Mumiang died in the ninth year of the apocalypse. One of only two human ability users to reach the tenth tier, she died defending the base. She had regrets, but no reason to feel bitter. But as she died horribly in a beast tide, her body being devoured by countless mutated beasts, her consciousness awakened. The comrade who had fought alongside her for years was the male lead of a novel called Reborn as the Apocalypse Tycoon's Beloved. The male lead had powerful abilities and became one of the Ten Lords in the late apocalypse. The heroine was a reborn woman who clung to the powerful male lead. She awakened both spatial and water abilities, and later became the beloved mascot of the male lead's team. As for Shen Mumiang, she was the vicious supporting female character who relied on her powerful abilities to ignore orders and overstep her bounds. She loved the male lead without being loved in return, and resented and hated the heroine. Because she was so powerful, the male and female leads could only put up with her again and again, until she died in a beast tide after acting on her own. All she got from the male lead was the judgment, "Arrogant and conceited. She deserved to die." In the end, the male lead took control of the base she had fought tooth and nail to defend, and lived happily ever after with the heroine, enjoying a life of shameless indulgence. Shen Mumiang, who had only handed the male lead temporary management of the base because she couldn't be bothered with its affairs: ... Her fists clenched. Blurb Two: Reborn in the first year of the apocalypse, when the old civilization's order had not yet completely collapsed and a new order was just beginning to take shape amid the chaos. At that time, Shen Mumiang was just a newly awakened ability user, scraping by on basic aid at the base. Her ability was so weak she couldn't even kill a mosquito. In a fit of rage, Shen Mumiang tore up the script that told her to "keep a low profile and grow stronger," grabbed a sickle, and hacked down a hundred zombies. Then, amid a heap of rotting limbs, she found a human who was still barely breathing, his body covered in blood and gore. After wiping his face clean, Shen Mumiang realized he was her mortal enemy from her previous life. The mentally unstable man from the rival base, and the only person who could fight her to a draw: Ji Weixue. Ji Weixue was not only on the verge of death, but had also lost his memory. Rather than take advantage of his weakness and kill him with one blow to avenge herself, or toss him out to fend for himself, Shen Mumiang chose to deceive him. Shen Mumiang: "I'm your big sister. You're supposed to be good to me. Understand?" Her amnesiac nemesis turned out to be surprisingly obedient and easy to fool. Not only did he believe her lies, he treated every word she said as gospel. When he came back from hunting, wounded and carrying food, he gave her the first bite. He warmed her bedding for her in winter. Whenever someone came looking for trouble, he was the first to rush out and fight. Her nemesis might have gotten stupid, but he was still just as capable. As someone useless at daily chores, Shen Mumiang watched her nemesis bustle around like a little snail girl, keeping their home spotless and beautiful. His motto in life was "Big Sis comes first." Shen Mumiang's feelings wavered between sheer delight and deep guilt. She was grateful to her past self for not killing such a capable housemate with one strike. Blurb Three: Ji Weixue was reborn in the year his family abandoned him and pushed him into a horde of zombies. On top of that, he was found by his mortal enemy from his previous life. Taking advantage of his amnesia, the other person ordered him around: stand guard, beat the dogs, warm the bed, and all kinds of bullying of the poor, memoryless him. Ji Weixue narrowed his dangerous eyes, wondering how to get his revenge, when he heard a lazy voice from inside the house. "Ji Weixue, help me put on some medicine." He went inside at the sound of her voice and saw his nemesis, fresh from a shower, sprawled bonelessly on the bed. Her smooth back faced him, utterly unguarded and without a shred of embarrassment. Ji Weixue's eyes turned blood red. His subconscious told him he'd been deceived and should be furious, that he ought to kill her while she wasn't paying attention. But his body obediently walked over and picked up the ointment beside her... [Extra Scene] While applying the medicine Shen Mumiang looked at Ji Weixue thoughtfully. "You're acting strange today." "How so?" Ji Weixue, whose memories had returned, stiffened slightly. Shen Mumiang blurted out, "You're strangely lovable." Ji Weixue: ... What a silver-tongued liar. [In this filthy world, you are the only pure color. A green tree takes root in barren, desolate land and grows seeds of hope.] #The heroine is a powerhouse in terms of strength and a flirt in love. Once she's set her sights on someone, she takes the initiative and is possessive. She is not a cold, emotionless career-focused heroine. #The male lead flips between loyal puppy and wolf-dog, and gets jealous when she takes the lead. #Both are strong, and they remain evenly matched. #A silly, sweet romance. Whether it's satisfying is another matter. Theme: What doesn't kill me only makes me stronger.