The Protagonist's Sister Is Actually The Strongest: An Action-Packed LitRPG Transmigration And Progression Fantasy

Have you ever read a novel with such a terrible ending that you wished you could change the story and give the characters you loved the happy ending they deserved?

I woke up as the protagonist’s younger sister in the massively popular novel Solo Player.
Fated to die no matter what path I take, constantly shadowed by my ridiculously overprotective brother — the world’s strongest solo player himself — I should have been helpless.
But I won’t go down that easily.
I’ll train until I surpass every limit, break free from this predetermined death flag, and rewrite my own ending.
All while the Constellations bombard me with sponsorships, gifts, and endless fangirling like I’m some top-tier idol streamer.
…What is wrong with these cosmic weirdos?!

Longer Synopsis:

I was just another failure of an author, writing stories nobody read, and that never sold. Seeking to improve my writing, I read the most popular novel at that time, Solo Player, to learn what made it so popular. However, as I read this story, I couldn’t help but feel frustrated about the story’s development, which had a terrible ending.

Eventually, and quite bitterly, once I ended reading the book, I found myself transmigrated into the very world of this novel. Did I become the Protagonist? A Villain? Or perhaps even an Extra? No, it was much worse than I imagined. Because I ended up becoming the most worthless character that nobody ever cared about in the novel. A character that is often considered the motivation for the protagonist to grow stronger, but also his greatest burden.

Someone every reader hated!

“I’m the protagonist’s sister…”

However, with my knowledge of this novel's events, my worthlessness was about to change. I’ve decided to not only become the strongest but also change the story’s terrible ending!

“I won’t let you go inside a Dungeon, it’s too dangerous.”

...As long as I can get this incredibly corny and overprotective brother out of my way!

And for some reason, the Constellations won’t stop bothering me.

[The Cosmic Throne {Butterfly That Flies Across The Universe} seems interested in your tenacity!]

[She has sponsored 1000000 Plot Points and the [Demon of Calamity Transformation Technique (SS)] Skill!]

[The Cosmic Throne {Monkey that Dances in Chaos} finds your chaotic nature amusing!]

[He has thrown the [Umbral Chaos Stone Necklace (S Rank)] at you!]

[Not enough? He launched the [Immortal Heaven Peach (SSS Rank)] right on your face!]

There was something really wrong with the Constellations this time around.

[The Cosmic Throne {Jester Filled With Lies} is happy that you’re bringing despair to your victims!]

[He has gifted you the [Jester’s Last Laugh (S Rank Privilege)] and the [Master of Manipulation (SS)] Skill!]

[The Cosmic Throne {Maiden that Watches Over Nature} seems happy you’re growing stronger.]

[She has gracefully sponsored you with 2000000 Plot Points and Fully Heals All Your Wounds!]

[She has also begun to wonder if you could plant some trees for her, gifting you the [Divine World Tree Seedling (SSS Rank)]!]

[The Cosmic Throne {Warrior That Seeks Calamity} is satisfied with your battle performance but asks for more battle!]

[He has sponsored you with 500000 Plot Points and [Beheading Sword of Destruction (SSS Rank)]!]

They simply couldn’t stop gifting me things as if I were some sort of famous streamer for them.

“I am grateful, but please just leave me alone already…”

What to Expect:
- Fast-paced Action and LitRPG Progression, System, Monster Taming, Skill Copy and Fusion, Crafting, with Dungeon and Other Worlds Exploration. 
- Constellations based on all sorts of both Historical and Mythological figures.  
- A colorful cast of side characters full of life, the original Protagonist changes and becomes a better person. 
- A smart MC that abuses her knowledge of the story to become REALLY OP.
- A story that doesn't go by the script, the butterfly effect the character creates affects the story and doesn't leave it as it was supposed to be, unlike many other similar stories. 
- 3 ~ 7 Chapters a week, almost daily updates until I can't. 1800 ~ 3000+ Words per chapter, usually. 

Note: This is a Novel Inspired by seveal similar stories, such as Solo Leveling, Omniscient Reader's Viewpoint, The Novel's Extra, and so on. It is mostly my own take, with many differences but that is clearly inspired. Solo Player as a novel does NOT exist, it is of my own creation within this fictional universe, and this novel is NOT a fanfic.  

My Grammar is not the best, and I am not a native english speaker, so I'm doing my best to improve. I would appreciate anybody pointing out the mistakes. 

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