Three Little Troublemakers Turned the World Upside Down After My Divorce - Chapter 6: Bastard

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

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, the Goddess ruling the world isn’t as thrilled to have him there, and kicks him to the edge of the world. Tsukuyomi declares that Makoto is free to find his own way after Makoto is abandoned by the other Goddess.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates