Harry Potter and the Dovahkiin - Chapter 31: Knockturn

This is a story of Xia An, a transmigrator from the end of the world, who transmigrates into the body of a cannon fodder who was the mother of the villain.

- Description from Wattpad

In the nation of Avrael, power is both a blessing and a curse. Sixteen-year-old Ayato Daath, a poor orphan, had always hoped to live unnoticed in the shadows of the city. But when he is forced to undergo The Rite of Manifestation, the ritual that determines one’s magical potential, his worst fear comes true—he is an Elite.Now torn from the only life he’s ever known, Ayato is thrust into a brutal world of magic, bloodshed, and treacherous politics. In a society where the strong prey on the weak, where rival factions scheme in the dark, and where a single misstep could mean death, Ayato must quickly learn one thing—adapt, or perish. And one thing Ayato already knows is that in Avrael, only the ruthless survive.

A mysterious and strange world, a human civilization lacking power, and a horrible and turbulent world of human life, Luo Kai survived humblely as a prisoner. Pain and suffering honed his will. War and killing promoted his growth. He suddenly looked back. Is already one of the most powerful beings in this world.

- Description from novelbuddy

An alternate realm invaded and the game descended. The entire Blue Planet was digitized.

Faced against countless waves of monsters, some people downloaded the Holy Knight module and became angels of light that helped the world reach enlightenment.

Some people downloaded the Warrior Monk module. They focused on their training and reached enlightenment overnight. With their fists and legs, they fought and made a name for themselves.

Chen Kun, who transmigrated to this world, downloaded the Boss module.

Each time he leveled up, his growth attribute improved multiple fold, and his attribute points multiplied. More importantly, all his skills were automatically unlocked as boss skills!

When the hole between the two realms opened and the gods of the alternate world came pouring in to invade this world, what awaited them was Chen Kun, who sat high up on a throne.

When the gods of the alternate world saw his terrifyingly long health bar as well as his boss skills that granted instant death and control immunity, reduced damage, true vision and many more skills, they despaired.

Chen Kun smiled and said, “So, are you the ones who will challenge my throne?”