Re:Zero Kara Hajimeru Isekai Seikatsu - Arc 1 – Chapter 7: An Incomprehensible Reunion

Today, I am a substitute for your fiancee. Tomorrow, I’ll become your sister-in-law!

Mu Mingtang is the substitute of the male lead’s first love. After she lost her family, she was adopted by the Jiang family and eventually became engaged to the male lead, the Prince of Jin.

Understanding very well that she was only a substitute, she removed her claws and fangs and turned herself into an imitation of the Prince of Jin’s first love. She couldn’t speak or laugh as she wished, she was prepared to live in the shadow of another woman for her entire life… until one day, the real Miss Jiang returned.

The real Miss Jiang was reborn. When she learned that she was the male love’s first love, she immediately returned to fight for her engagement and identity.

In order to please his first love, the Prince of Jin gave the substitute to the Prince of Qiyang, who had become a dying madman. She was just a low-quality fake, anyway. If she dared to anger his first love, he would turn her into a childless and powerless widow for the rest of her life.

Mu Mingtang, the target of their mockery, finally snapped: Okay, since you gave me to another man, I’ll make you bow and call me sister-in-law!

However, none of them expected the Prince of Qiyang, the God of War, to actually wake up!

—

Xie Xuanchen is the son of the late emperor. The whole world once trembled beneath his feet, but one day, for a reason unknown to even Xie Xuanchen himself, his nature suddenly changed. He became cruel and bloodthirsty, leaving his father with no choice but to pass the throne to his uncle.

Eventually, Xie Xuanchen was unable to resist the illness and fell into a coma.

When he woke up again, there was a beauty standing before his bed, looking at him in surprise. Then, for the sake of his domineering little princess, he revived his name as the God of War, reclaimed the throne, and united the world.

I once captured the world to satisfy my own ambition. Now, you are the reason for my ambition.

Shennugou is an old and infertile place. It’s hard to find a woman to marry here.

The Li family is extremely poor. With only four bare walls for a home, they don’t even have a woman to manage the household.

The Heavens had mercy today, Li family’s oldest son had saved a woman at the market and brought her back home.

Li Man was killed by her mother-in-law and transmigrated. She was almost hanged on the first day, but, fortunately, she was rescued by the Li brothers.

This doesn’t mean that her destiny is over.

The language didn’t make sense at first, she discovered that, here, standard Mandarin sucks.

- Description from Novelupdates

Li Xiaofei, thrust 500 years into the future, finds himself as a young orphaned man in a harsh, post-apocalyptic world. Raised by a woman only slightly older than himself in the unforgiving slums, he quickly learns that survival requires both strength and cunning.In a world ravaged by alien star beasts, where gangs rule the streets and political factions vie for control, chaos is the order of the day. Amidst this turmoil, Li Xiaofei must carve out his own destiny. Armed with the mysterious Moonlight Treasure Box, he embarks on a perilous journey to make a name for himself and protect the ones he loves.Will Li Xiaofei rise above the chaos to bring peace to his world, or will he be consumed by the darkness that surrounds him?Official BlurbThe star beasts invaded, and Earth’s civilization collapsed. A young man, wielding the artifact Moonlight Treasure Box, drew upon the legacy of three thousand martial arts techniques from various worlds. He protected humanity, won the hearts of beautiful women, slew star beasts, suppressed myriad races, ruled the universe, and commanded the heavens. In the vast cosmos, he was invincible!

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates