Kyoukai Senjou no Horizon - Volume 3B, Chapter 36: Agreement at the Table

Hakuto's life changes forever when his father Shin— a man with highly questionable morals—marries Kagura Kurotsuki, the CEO of a multinational company, and they move into her luxurious mansion.There, he meets the alluring daughters of his new stepmother: the seductive Yuzu—who doesn't hesitate to tease both her new stepbrother and her stepfather in ways that are... rather bold—and Rika, more introverted and irritable, yet just as sensual.But nothing is truly as it seems...Kagura is a succubus, but Rika and Yuzu are different.They were born from a demon and a vampire—something that shouldn’t be exsiste.Because of that, demons, vampires, even humans want them.But Hakuto won’t allow it.He’ll never let anyone hurt his beloved stepsisters.

Suzumiya Kaede, a gamer, fell asleep while playing a game all night and when he woke up he found himself in another world, a fantasy world where using magic is possible! Using his knowledge of games, skills, and cheats, Kaede decides to enjoy as much of his new life in a different world through his newly-acquired magic and sword!

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

[Female lead space + male lead rebirth]

Yin Miao just picked up an angry book from the ruins of the apocalypse, and accidentally entered the book and became an exiled unlucky person. It’s just that there are poor mountains, bad waters and hungry people everywhere, and they also drag a family who are used to the fine clothes, jade, food and grains.

Fortunately, the system sent an initial mission gift package-a space, but she just planned to develop the village into her own vegetable basket, meat plate, rice bag, and natural disasters and wars came.

Yin Miao cracked…

“Where A Miao goes, I will go.”

Seeing the bright woman who was packing things everywhere and preparing to take her family to escape, Xiao Xuan leaned against the tree and said with a smile.

Refugee Yin Miao hid the food stock that was about to explode at any time, and remembered that the plot mission had already deviate from the 108,000-mile mission, she sighed and asked, “Will you also go to the place where you lost your head?”

“Then I’ll go even more.”

A flicker of anger flashed in Xiao Xuan’s eyes, and this time, no one could move the slightest bit of what he wanted to protect.

- Description from novelbuddy