Global Game: I Have Portable Store - Chapter 8: Shield Company

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.”

Alex, killed by the God of Darkness, was crushed by his giant sword and woke up to find himself back on the day the 'Universal Descent' game launched!Monsters and gods hadn't began to descend into Earth yet, and so this meant that Alex, along with his 10 years of experience, could now make a difference.But surprise, once he re-enters the world of 'Universal Descent', instead of awakening his normal C-Level talent, he instead awakens the SSS-Level 'Extraction' talent!He could now extract items, talents, attributes and skills from monsters!Ding![You have extracted the Artifact-Level 'Excalibur'!][You have extracted the SSS-Level 'Meteor' Skill!][You have extracted the Artifact-Level 'World Map'!]Now, there was no monster or god in this game that could stop him!

Demons, devils, ghosts and monsters

Plunge the mortals weak in horrors;

Arms of gods and blades of devils,

Shroud the world in untold evils.

Lu Sheng was an ordinary civil servant in the modern world. After waking from a drunken stupor one day, he found himself trapped in a dangerous world where demons, ghosts and supernatural monsters terrorize the land.

In this world, ordinary mortals live in dark fear and helplessness, without any means to fight against the supernatural.

As Lu Sheng struggles desperately for survival, he stumbles upon a game mod he had designed for a mobile phone app in his previous life. It unexpectedly becomes his special ability, which enables him to instantly level up any skill he learns, albeit at a cost.

Thus, Lu Sheng begins his journey, striving for power beyond the reach of a mortal as he treads the way of the Devil…

- Description from Novelupdates

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.