Marietta-hime no Konrei - Chapter 4 AND THEY MEET

Strong? Handsome? Savage? Badass?It's all about the intelligence quotient, my friend.————PS: Mutation shouldn't be mistaken for enlightenment.

Jian Huan found herself transported into a xianxia novel as the fiancee of the main antagonist.Feeling her empty wallet, she recalled the pitiful fate of the original owner of the body who stubbornly refused to annul the marriage. Without hesitation, she took the marriage contract and went to the antagonist for a friendly negotiation.At this moment, Shen Jizhi, the future scourge of the cultivation world, was still a righteous disciple. He silently looked at the marriage contract with a cold expression, asking, “How can I get you to annul this marriage?”“One hundred thousand spirit stones,” Jian Huan held up ten fingers, “as long as you pay one hundred thousand spirit stones, our marriage will be void.”Shen Jizhi fell into silence for a moment. “Is there nothing else you want me to do?”Jian Huan shook her head. “None.”Shen Jizhi asked sternly, “You will only accept this condition?”Without hesitation, Jian Huan replied, “Yes.”Shen Jizhi’s tone turned harsh. “Then there’s no annulment.”Jian Huan was confused. “?”Shen Jizhi looked at her and said, “I won’t annul the marriage. We can get married whenever you want.”He bid farewell. “I have other matters to attend to. Goodbye.”Jian Huan exclaimed, “???”

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

We were a peaceful people living in harmony with nature in the vast lands of Lyréanor, but this peace was short-lived when our people were defeated by the dark elves, an ancient people even older than this world. It is said that they arrived in Lyréanor by boat and since their arrival, chaos has been unleashed. Proud of their obscure power, derived from dark rituals, they have raised gigantic armies of monsters whose name is synonymous with terror: ‘Obscurus’.They went on the rampage, and everywhere they went the grass didn't grow back, life died and disintegrated. Seven, there were seven. The seven dark elves known as the Lords of the Apocalypse. A single gesture from them was enough to strike us all down, a single gesture from one of them was enough to decimate us in blood and terror.And as I, Foster, contemplate the macabre scene before me, the bloodied and deformed bodies of my fellow elfes beings, and as death grips my soul, a strange sign appeared before me.[Ding... Activation of the world tree system]