Toaru Majutsu no Index: New Testament - Volume 10, Chapter 14: V.S. “The Police of the Front Stage” Round_06.

A genius talisman practitioner is reborn as a seven-year-old girl! However, her innocent appearance belies her vicious personality.
In the remote countryside, the Crown Prince runs into her, beating up her enemy. She is indifferent, but it’s love at first sight for the Crown Prince!

“Not good, Your Highness the Crown Prince, Her Highness the Crown Prince Consort used an immobilization talisman on His Majesty the Emperor, and His Majesty is currently eating dirt in the main hall.”

“Isn’t that normal? Who told that dog emperor to provoke my wife? I say it’s a job well done! Pour a bucket of ice water on him to cool him down!”

- Description from Novelupdates

Underestimated, shoved aside, trampled on, and lied to!

The life of a typical nobody like Alix was not an easy one. Mocked for being a poor orphan with no history of his parents, the loneliness was his only kin and kith in the whole wide world filled with magic.

With little time left to live and limited expectations from life, everything suddenly took a quick turn when he was accepted in the royal academy of arcane and taken in as a student of the crown princess who turned him into something that he never imagined he would become.

The young boy discovered something amazing in the vast emptiness of his soul, when his life was in danger and he was at the end of the line, a true monster's powers were awakened in the midst of all the madness, the truth of the past came to light, the mysterious young man finally found a purpose to his life and vowed to bring destruction on those who took everything from him.

“I will kill anyone who stands in my way, you think I am weak? if I were you I would take a look in the mirror, I will show this world what true power looks like” Alix said as his eye glowed blue and red.

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

《The Peter Pan who doesn’t want to grow up, Wang Chao & the Poor and Handsome Cinderella, Xie Zhuxing》

Two plain Jacks, one annoying and one scheming. An idiotic story that might not be sweet.

- Description from Novelupdates