Elf Tensei Kara no Cheat Kenkoku-ki - Book 2 Prologue 1: Fire Fox

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

“Impossible… Why are you not following my orders!? Clearly I sucked your blood, why!?”

On the very first day of high school, the youth subscribing to the philosophy of “absolutely ordinary everyday life,” Kujou Hisui, encountered disaster head on: He was attacked by Rushella Daamu Draculea, the vampire who had lost her memory. Rushella was greatly intrigued to find her vampire powers ineffective against Hisui. Not only did she make Hisui’s home her own, she even enrolled in his school to stick to him–

Hisui had no choice but to help Rushella regain her memory. But before one crisis could be resolved, many more had risen. With tempting advances from the mysterious Sudou Mei, and kidnapped by the girl from the Supernatural Investigations Section in search of Rushella, Hisui’s ordinary life has been replaced by its complete opposite, drama–

Romantic comedy and supernatural action in a school setting!

Within the dream of the dreamer, the one who was dreamed of awoke.

She comes from the top of Zhongshan Mountain, she is covered with frost and snow, she is unparalleled in beauty, but she has no talent for “love”, and she likes nothing more than a cup of tea in her life, watching the excitement.

It is said that she was young and ill-fated, with a weird personality, but in fact, she can also be obedient and docile, with a smile like a flower.

It is said that she has a mean tongue, arrogant and rude, but in fact, she can also smile sweetly and be gentle and amiable.

but–

She… is… is… no, happy, willing!

Until that day, she met a boy.

Half of the city is full of wind and moon and half of the city is snow. All the scenery in her life are brilliant because of him.

…

- Description from novelbuddy