Cancer_Reo

He was supposed to transmigrate to a magic world, but due to an accident, he ended up trapped in a massive library. 
The system assigned him a task: for every book he read, he would be rewarded with mana stones, until he finished reading all the books. 
A trillion years later, Daniel finally finished the last book!  
[Ding, detecting that the host has finished the final book. Calculating system rewards.]
[Ding, reward calculation complete. Dispatching rewards. The total number of mana stones the host has accumulated: 99999999...9999.]
"Damn, am I that rich now?"  
[Ding, detecting that the host has completed the task. Loading world...]
...  
Goddess of Fate: "Daniel, my divine realm needs expansion. Could you sponsor me with some mana stones?"  
God of Storm: "Daniel, the divine punishment is about to descend. Could you lend me some power to help me get through it?"

Imprisoned for a Trillion Years, I Was Worshipped by All Gods!

Alan hurried back and immediately opened the glass vial he was holding, carefully pouring some of the potion into his sister's mouth.

As the potion entered her body, Isabella's tightly furrowed brows finally relaxed a bit.

The pain that nearly made her faint began to ease.

"Brother... is that really you? I thought I'd never see you again," Isabella slowly opened her eyes, and upon seeing Alan's worried face, tears welled in the corners of her eyes.

Alan reached out to wipe away her tears, feeling increasingly guilty. "It's my fault, I've been so focused on leveling up that I didn't take care of you, not even remembering your potions."

Isabella sighed. "It's because of my strange illness that I can't help you and often drag you down."

Chapter12-Challenged by the First Genius Girl?