What are the potential drawbacks of time skips in a long battle in a novel?

English is not my first language so please take care of me and if you find mistakes in it tell me I fix it as soon as possible. Max Winchester died due to an "accident" while reading the novel after his death he meet God who allowed him to travel through and do whatever he think best but on condition to make Protagonist's life miserable. He also gives him the strongest system [Netori system] that help him steal Protagonists Woman, Chances, Luck, etc Why does God want to make that Protagonist's life miserable? And why [Netori system] given to the max let's find out. (English will get better after chapter 38.) I don't own a book cover, I find it online, If creator wants me to change it just message me, I will remove it.

Before there ever was a boy that ever lived in a cupboard on Four Privet Drive, there was a similar boy in a far worse home that lived on Spinner’s End. We all know the tale of that abused boy who grew up to become a bitter spy. But not all tales end the same for in the many parallel worlds that exist in the universe there are far better endings, and equally as many worse ones. This is a tale of one such condemned universe that for better or for worse chooses to change its own fate at through the sacrifice of the bitter spy. (All rights to the Harry Potter world and characters belong solely to J. K. Rowling. However, I do claim creative fanfiction rights. Please do not post my fanfiction elsewhere without my express permission. This work will also be partially hosted at RoyalRoad, Wattpadd, and Archive.)

Being taken away of all his freedom, Noah was thrown into the jail accused of a murder he hadn't committed. This incident broke his personality permanently, getting out of the jail Noah started living as a shut-in giving up at everything.  Noah read novels as a mean to pass his time, while reading novels an particular novel caught his eyes, it's name was 'the hero of velveric fights the demon lord' 'It's a harem novel......' That was what Noah had thought in the beginning but, it all changed at the end of the novel.  'What the Hell's with this crazy novel!' The protagonist and all his harem members were killed and in the end the demon Lord took over the world.  It was then, after finishing reading the novel, Noah started coughing out blood and succumbed to his lung disease. Opening his eyes Noah found himself in a body of a 8 year old kid of the Melvix family which appeared in that crazy novel. He was known as the garbage of the Melvix family by all the knights and family members but that didn't matter to Noah. What matter is that- 'It's impossible to survive in the novel if you are not strong enough......' ********************************************** The cover used for this novel isn't mine. if you are owner of it and want to remove it please inform me.

A regular student enjoying his high school life playing idle games on his phone gets isekai'd into a different world with a game-like system and mechanics. He was given the power of "auto-battling" as his innate unique skill. We will follow his journey as he explores this new world. Character Progression Page can be found in the Auxiliary Volume. The Cover Page is generated from Gencraft.

This is bad, don't read it.

This is an Autobiography of a God, from the moment he died, up to the point he reins supreme over the entire Multiverse. Follow Soren as he tells us about his life, and how sightseeing in the different worlds would cause him troubles befitting a God. Disclaimer!: I do NOT own any franchise that I may use in this Fan Fiction, and it is purely for entertainment, and mental relief for fantasy. All work goes to their proper creators... Please support the Official release! Disclaimer 2: The cover image is not my picture, it's just a representation of what I assume the main character Soren would look like, I will take it down if you show proof that you own the picture and wish me to take it down