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Journey of World: Auto System,

Multiverse World traveling as the name implies with a system able to do tasks for the MC but it's also a leveling type system and yes, its sentient (Or rather the voice is a medium.)

Even though it's an 'Auto' task system, MC's reliance on it goes down as it goes on, as he himself will do things.

If it peaks in your interest somehow and you do check it out, do get past the first 3 chapters as the main thing starts at ch.4.

https://www.webnovel.com/book/journey-of-worlds-auto-system-%7Brevamped%7D_17781630106013105

https://www.webnovel.com/book/journey-of-worlds-%3A-auto-system_17781630106013105

Synopsis:
Journey of Worlds with only himself and system -

A Lucky or Unlucky guy passes unnaturally and is isolated in darkness and later discovers another creature or being that looks like a small black orb covered in black fog of flames of some kind and after unknown amount of time of endless boredom and sleep along with one-sided talks with the orb
a sudden light comes fourth blindingly.

It happened to be a "High Being" a servant of some god looking for that orb like thing...

At the end of it he was given a chance of a new life with some wishes from that so-called god.