Netheril’s Glory - Chapter 81: No. 1's Performance.

Athena Grant,a human,dies in a car accident and becomes Eira Liora,an elf. Transported to the barren and cursed island of Luinmir, a once-thriving land now abandoned.A year ago,their King announced that the island,Luinmir would no longer be under the empire's control. It was well known that the land was barren and poverty stricken...She was abandoned both by her Kingdom and her Father.She wakes up one day with a system.“So what if they were abandoned and deemed cursed,she would show them all the highest peak of knowledge and development. The island's core is broken...fine,she'll get it replaced but this time,the island would become hers to keep,she would make sure of that.”

Childhood sweethearts.
The most popular person in school is my childhood sweetheart.

- Description from Novelupdates

Humans, once the masters of Earth, were losing their place to the inexplicable phenomena known as Objects.And this is a story about becoming an Object and living worry-free in the Seoul of such a world.

Lu Jun, while traveling in Bashu, casually purchased a White Tiger pendant, only to discover it was connected to the White Tiger Totem. This unexpected event forced him to traverse into the world of Versatile Mage, a parallel universe to Blue Star. In this realm, magic flourishes, and monsters run rampant. (The story is designed to be understood without prior knowledge of the original novel, with the setting gradually unfolding.)Through the fusion of dual origins, Lu Jun awakens an innate dual-element talent and gains mastery over the never-before-seen Metal element.In the face of monstrous invasions, humanity's precarious survival, and constant infighting, Lu Jun stands atop the Sacred City and declares resolutely:“I am the King of the World. Who approves? Who opposes?”“Even if I must bear the Abyss of Calamity and hold up the Sacred City single-handedly, I, Lu Jun, remain invincible in this world!”“Sword, come!”With a single strike, the seven Archangels are nailed to the city walls, a sight that shocks all. The bodies of seven Red Cardinals pave a road of blood and boneDisclaimer: I don't own Versatile Mage or the Fan fiction i am just Translating