Sword Art Online - Vol 5 Chapter 5

He was a Martial Arts prodigy, a master of using poisons!He descended the mountain to search for his junior sister but unexpectedly became the School Beauty's bodyguard… From then on, a demon-like student was born! He pursued the School Beauty, took down bullies, and was revered as the supreme ruler of the city! He cultivated Ancient Martial Arts, annihilated formidable enemies, and swept across all directions to ascend to the Peak.

Lu Yanzhou’s best friend Xie Chengze’s soul was broken into fragments and fell into those small worlds. In order to save Xie Chengze, Lan Yanzhou embarked on the journey to collect Xie Chengze’s soul fragments.

However, he made a mistake in the process of collecting his soul fragments. He fell in love with Xie Chengze’s soul fragments.

Xie Chengze said he cultivated the ruthless dao. He was cold hearted and emotionless but he has always regarded him as a brother. He took advantage of when the other party lost his memories to fall in love with him…

The end of the first world, Lu Yanzhou, who was in love with Xie Chengze, was struggling: “When Xie Chengze recovers his memories, will he beat me up?”

After the end of the second world, Lu Yanzhou, who had another romantic relationship with Xie Chengze, made up his mind: “There’s absolutely no next time! Xie Chengze probably won’t break off all relationships with me?”

The end of the third world, Lu Yanzhou was apprehensive: “I’m here to save him..”

The Nth world ended, Lu Yanzhou broke the jar and threw it: “Wait until Xie Chengze recovers, I’ll go after him. There might be a 1% success rate, right?

Xie Chengze: “…” I took the initiative so much, are you blind?

- Description from Novelupdates

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.