What kind of light novel features a main character with a system?

There are many. One example could be 'Divine Ascension' where the MC gains god-like powers and uses them to protect the world.

There are quite a few. One example could be 'The Skeletal Chronicles' where the MC is a powerful skeleton navigating a magical world.

You might like 'Supreme Legacy'. Here, the main character is OP due to a special inheritance or a hidden power that emerges, making them nearly unbeatable.

There are many. One example could be 'The Underdog's Journey' where the MC faces constant bullying but overcomes it through inner strength and determination.

You could try 'The Adventures of Lyra' - the MC is an adventurer exploring uncharted lands and uncovering ancient secrets. The story has lots of action and mystery.

Well, there are many. One example could be 'The Betrayed Hero's Journey' where the MC is betrayed by his closest allies.

Well, there are some light novels where the main character has panic attacks to add depth and complexity to the story. For example, 'The Inner Struggles' has a protagonist dealing with this issue while navigating a fantasy world.

There are many such light novels. One example could be 'The Time-Traveler's Adventure' where the MC goes back to fix past mistakes and change the future.

Well, there are many. One example could be 'The Monster's Rebirth', where the MC is reborn as a powerful dragon monster and has to navigate a fantasy world filled with magic and adventure.

One main feature might be its focus on the soul system. It probably has unique rules and mechanics related to souls. Maybe souls can be upgraded or have different powers within this system.