Maoyuu Maou Yuusha - Volume 2 Chapter 2, “What has Appeared will Definitely not Disappear!”

When Ren Sheng is being hunted, in order to not fall into the hands of his enemies he decides to jump into the crack of space and time. Unexpectedly, he crossed into the future and was forced to substitute as a bride while he was still in a coma.

When he wakes up, he actually has a husband… Ren Sheng is extremely satisfied.

Such a delicious nourishment, this is his first time seeing it! Really want to root up ah ah ah!

As a result Lord Marshal, who was sick in bed, had a “little wife” who has been touching him all day and drooling over him.

- Description from Novelupdates

Lin Xiao was an orphan who strived to get stronger while living with his sickly younger brother in an unnamed small village.

Rule number one: “As a scholarship student, you should steer clear of the rich kids.”Olive raised an eyebrow. “Why? Because of bullying?” she asked, playing dumb, though her mind flashed back to the scene she had witnessed earlier.“Exactly! You should avoid the school heir especially. Bullying's like a sport around here for guys like him. If you offend the wrong person, it won't end well. Trust me, if you want a peaceful year, just stay out of their way.”_______In a world where social hierarchy and family legacy reign supreme, Olivia Williams, a brilliant and determined student, disguises herself as a boy to attend the prestigious Belmont High School. She's won a coveted mathematics scholarship, but her triumph comes with a price: keeping her true identity hidden amidst the treacherous landscape of boarding school life.Enter George Lucas, the charismatic and arrogant heir to Belmont's legacy, who finds himself inexplicably drawn to “Olivia,” the mysterious new student. As they engage in a fiery hate-to-love relationship, Olivia must navigate the complexities of her own feelings, the danger of discovery, and the class differences that threaten to tear them apart.As they delve deeper into their whirlwind romance, Olivia and George must confront the dark secrets of their own identities, the weight of family expectations, and the transformative power of love. But with great passion comes great risk: their relationship could upend George's family's reputation and legacy, forcing them to choose between love and loyalty.

Jiang Shang travels through the Zongman world, but the first world is Fuyuki City?

Joan of Arc, who was not supposed to be alive, came to her door and begged him to participate in the Holy Grail War?

I thought it was the beginning of hell.

At the critical moment, the system awakens!

Just make choices, or rewrite the plot, to get amazing rewards!

“Ally with Joan, get: Top Heroic Spirit Template!”

“Choose to save Matou Sakura, get: Imaginary Space!”

“Summon a mad-ranked servant, get: the holy gun of the end!”

The Holy Grail War begins!

Facing the arrogant King of Heroes, Jiang Shang showed his magic whip under the dull gaze of all the heroes!

“Arrogant tyrants should be beaten constantly.”

“I won’t stop until you admit your mistake.”

- Description from novelbuddy