The Little Junior Sister of a BE-Prone Senior Brother

[I may rewrite the main story. I'm leaving it on hold for now and might slowly post a revised version later.] [Seeking bookmarks for 'I Transmigrated into the Younger Sister Who Dies Young in a No-CP Novel'~] Synopsis: Sang Qiaoqiao followed a long xianxia novel with a happy ending for everyone, except for the eldest senior brother, Situ Qing. He was an important character, yet he spent his whole life alone. All the good things went to the male and female leads, while all the dirty work, hard labor, and damage-taking fell to him. When one person had to be sacrificed to achieve the greater good, the leads were still giving speeches to make everyone cry, while the eldest senior brother had already silently jumped into the formation to become its offering. Sang Qiaoqiao: Qaq, you terrible author, show yourself! I absolutely won't send you a box of razor blades! The next day, she woke up in the book. She had transmigrated into the least noticeable junior sister in the sect. She wasn't a cannon fodder, a foil, or even a background character there to set the mood. She was just an invisible backdrop, added because the terrible author thought a sect needed a junior brother or sister to feel complete. But none of that mattered. What mattered was changing the eldest senior brother's tragic ending! Poker-faced senior brother, I won't let you die! * The Demon Lord was bored. For the past few hundred years, he'd kept the demon realm perfectly in order. Relations between humans, demons, and monsters were peaceful again, and the damn place was quiet. The question he asked most often was: "Is nobody rebelling today either? Really? I even had a monster spy join the guards as their captain. Why hasn't he made a move? I'm so bored..." His subordinate: "...You may not believe this, but that monster spy loves peace. Not only does he have no plans to overthrow you, he's also secretly dealt with a whole bunch of people eager to take you down. But maybe we shouldn't tell the Demon Lord about that." The Demon Lord sighed every day. Watching his once-spirited self gradually turn into a bitter old wife, he decided to find himself something to do. "I'll go become the eldest senior brother at a human sect!" They say sect elders are the worst. As soon as they become elders, they start looking for capable juniors and dump every chore on them. Who else could handle this dirty work but me?! So while the Demon Lord's devoted subordinates worried he'd wear himself out and handled every big and small matter in the demon realm, they watched him go deal with the petty affairs of some random sect instead. And he seemed to be enjoying it?! Until one day. A sect disciple tried to bother the eldest senior brother with trivial matters. The Demon Lord, in the role of eldest senior brother, was about to obediently deal with it when a junior sister suddenly jumped out and pointed to the steward outside. "For little things, ask them. The eldest senior brother needs to cultivate." Someone came to ask him a cultivation question. The junior sister said, "Don't you have a master? Or a senior brother or sister in your own branch? Why are you asking us basic questions from the neighboring peak? Go back!" An outsider sect came to provoke them, and the disciples asked the eldest senior brother to fight. The junior sister said, "Where are the elders? If all they do is eat and leave everything to other people, including fighting, they might as well step down!" The Demon Lord watched the girl protect him like a hen guarding her chicks. He tilted his head and suddenly decided that being a busy eldest senior brother wasn't all that great. What could compare to romance? He announced, entirely on his own, that he was in love! And so the people of the demon realm watched the Demon Lord go from "I'm just trying this out. I'll be back in a hundred years" to "So what if I'm a lovesick fool? I want to cuddle with my wife in the human realm. Don't bother me, demons!" The demons: "Look at your subordinates, and that monster spy who's even more like a subordinate than your actual subordinates. Doesn't your heart ache?" The Demon Lord: "Nope~ My heart is with my sweetheart~" Subordinate: "Ugh!" --Seeking Bookmarks-- 'I Transmigrated into the Younger Sister Who Dies Young in a No-CP Novel' Xie Songyu stumbled across a no-CP farming novel. She'd barely read the opening when she noticed that the protagonist's younger sister, who died young, had the same name as her. Then, without warning, she transmigrated. She regained consciousness at the moment the younger sister was supposed to die. The original girl's fever wouldn't break. In a rainy mountain forest, she had no blanket, no dry firewood, and no warm clothes. The only person with her was her little turnip of a brother, nearly crying with worry. "Wait for me, little sister! I'll catch a fish! Then I'll trade it to the medicine man for medicine! You have to hold on!" He was about to rush out into the rain. According to the original story, starving wolves prowled around the edge of the village until they couldn't resist breaking into the home of the two siblings, who depended on each other for survival. The brother had gone out to catch fish and escaped with his life. His sister was dragged away. When she was found, all that remained was a broken skeleton. The only thing that could identify her was the tattered, torn dress beside it. Burning with fever, Xie Songyu struggled to grab her brother's sleeve. Her brother: "Don't be scared. I'll be back soon!" Xie Songyu: "Take me with you." // Not a conventional xianxia story. It follows a poor, ragged child with nothing as she slowly grows up. Farming, a leisurely pace, and healing (probably QAQ). Theme: No matter where you are, keep fighting to live.