MTL - My Inseparable House Guests - Chapter 619 Old horse lost

To be is to have a soul. The soul begets a will. Wills accumulate into mysterious psychic forces, weaving secret domains within the fabric of reality.

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

Never underestimate the guy who has so much Mana it should kill him...Nathaniel's bus ride was supposed to be just another boring commute. But now, he, 23 fellow passengers, and a corgi named Biscuit are stuck in a “Hell difficulty” tutorial, battling monsters and leveling up.Easy difficulty, anyone can handle. Normal difficulty, you've got to put up a fight to get by. Hard difficulty is where only the tough ones last. And Hell? That's where you have to be a bit out of your mind!With his terrifying talent for mana manipulation, Nathaniel decides to invest every stat point into mana. Attribute imbalance be damned. It will either kill him before the monsters and his enemies can, or turn him into one of the most powerful beings within the system.