My Sister the Heroine, and I the Villainess - Intermission, Chapter 0.2

Reborn as a sword, he lived for hundreds of years, and then he occupied the body of a 15-year-old prince.

It was a time where demons roamed the earth and chaos reigned. The story took place in Luoyang, the legendary capital of the times. During the night, one could find people holding on to their food with dear lives as they faced off against stray dogs, people with weapons in hand vowing to fight against Fate to their very last breath. There was bloodshed everywhere as some died meaningless deaths, while the strong tyrannized the weak and the truth was frequently hidden. Some of the citizens had completely lost their mind, while some died on their travels. Most importantly, the words of a certain youth caused much panic in the human world. It was a time of little warmth as nights in the capital were frequently accompanied by gusts of wind and rain, and it would be covered with snow during winter. Such were the days…

- Description from Novelupdates

Yuan Jia died early, and only after meeting the system did he know that his younger brother was the male lead, and he was the male lead’s cannon fodder brother.
Even if he is more talented than the male protagonist, how can he be more powerful than the male protagonist as a supporting role?
So he suffered a plot kill.
His business empire will be inherited by the male protagonist’s younger brother…
The connections he made will be inherited by the male protagonist’s younger brother…
The marriage date he set was inherited by the male protagonist’s younger brother…
And he is just the older brother who died young in the memory of the male protagonist. Take it out and remember it when you need it, and forget it when you don’t need it.​​
Yuan Jia’s goal is to work hard to live longer than the male protagonist’s younger brother.
As long as he doesn’t die, the male protagonist will always be just a younger brother.
World 01: [There is no eldest son of Houfu who died of illness] √
World 02: [There is no giant president who died in an air crash] √
World 03: [Nongmen Tianjiao who did not fall into the water] √
World 04: [Founding Emperor who was not robbed and killed] √
World 05: [There is no school god who died in a car accident] √
World 06: [Prince who was not deposed and poisoned] √
World 07: [There is no brother who accidentally fell off a cliff and died] √
World 08: [The true biography that was not plotted by the younger brother] √
World 09: [Cousin without plundering ability] √
World 10: [A powerful minister who was not framed for treason] √
…
2. Whether Yuanjia wants to marry and have children depends on the situation.
3. There are many kinds of male protagonists and younger brothers, there are dark villain male protagonists, and there are decent male protagonists of Guang Zhengwei…
4. Various types of routines, please pay attention.

Content Labels: System Fast Passing Through Books Shuangwen
Search keywords: Protagonist: Yuan Jia ┃ Supporting role: Pre-received new articles “White Eyed Wolf, I Don’t Love You [Quick Cross]”, “I am a gentleman of the male/female host [Quick Cross]” click into the column to see! ┃ Other:
One sentence introduction: I am not dead, the male protagonist will always be a younger brother!
Purpose: The protagonist must fight for his life with the sky and live a wonderful life.

- Description from novelbuddy

The young lord of a small and weak country saves a dragon beside the sea one day.