Toaru Majutsu no Index: New Testament - Volume 3, Chapter 4: Isolation and the Collapse of the Rules. Trident.

The Republic of San Magnolia.

In her previous life, she was a highly respected Heavenly Empress, but on the eve of her wedding, she was betrayed and died by self-immolation!

Zhang Ruo Chen was the sole male heir of one of the nine emperors of the Kunlun Field. Ruo Chen’s father was known to all as the “Enlightened Emperor”, however Ruo Chen didn’t just leech off his status as emperor’s son. He proved himself to be a dragon amongst men, possessing a heaven defying body, and managing to cultivate to Greater Perfection within the Yellow Horizon Realm, at just the young age of 16.

But even though he stood at the summit of the younger generation and had a boundless future, he sadly died at the treacherous hands of his own fiancee at a young age.

Reincarnated 800 years later in the body of a young boy who shares his name, he found out his former fiancee already unified Kunlun’s Field and built the First Central Empire, and was now known as Empress Chi Yao… Empress Chi Yao—Her Majesty governed the mortal world and enjoyed prestige in all directions as well as an eternal life.

Zhang Ruochen stood outside of the Imperial Ancestral Temple, looking at the statue of Empress Chi Yao, and the flames of hatred burned in his heart. “After I practice for 13 years, I shall send the empress to her doom!”

- Description from Novelupdates

Bored in class, Ivaim suddenly transmigrates into a world plagued with Fractured Realities.A century ago, Reality Masters suddenly arrived— bringing a wave of terror over the planet.Just as the people despaired, they began to discover “Threshold Items” which allowed them to enter the domains of these Reality Masters.They had two options starting from there :One, to become a Reality Walker— a person marked and blessed by a Reality Master, fighting by their side in order to defend against other Reality Masters.Or to become a Reality Ruiner— A person who kills Reality Masters, directly consuming and taking over the powers that they posses!However, to Ivaim, he seemed to have taken on a different path.As he looked towards his own body, he sighed as he realized that he was neither a Reality Walker, nor a Reality Ruiner.—He had somehow become a Reality Master....