A twist to the original Tower of God story. It's Author's Note, so it's obviously biased, but can be informative; it includes minor spoilers.
Fanfic happens during the canon storyline, and the OC is smoothly inserted into the story, being an important character and a part of the main cast from the start rather than just being the background, meanwhile, the other side characters like Rak are still relevant and important.
All events from the beginning receive minor twists while still staying faithful to canon. In my eyes, the twists are as big as they can be while keeping the Main Character’s personality of being pragmatic and not showing off without a purpose. This doesn’t change the core of the events much initially, but it culminates during the Crown Game that has the largest changes and completely changes the plot.
What people can like or dislike is the fact that at one point the OC completely takes over Bam's role as the Main Character and the Fated Kingslayer (Mordred's theme), and Bam's importance in the story gradually shrinks to... nothingness. Even initially during the early tests, Isaac steals the spotlight because Bam basically... does nothing and has no strength at that time, so it just happens very naturally. I hope people accept that this is the story of Isaac Ainsworth and his sword/partner Mordred, and no longer Bam, who here takes a backseat.
The OC is a Magus with the strength and abilities of a Saber Class Servant from the Fate verse. He's the strongest Regular on the 2nd floor, without having equals, which can also be a bit boring, but he's still far from the level of Rankers and has a lot of training to do. Apart from the initially known abilities as Mordred, he slowly discovers his other powers.
The MC (OC) initially appears quite cold-hearted and selfish, being a Magus seeking power, but he slowly turns out to be somewhat of a Tsundere, being cold and merciless to strangers, but protective of and good to people that he holds dear. The Tower also changes him.
Mordred’s role in the story is that of the MC’s friend and partner, and not a lover. While the MC is the logical one, she’s the chaotic, rash and brave one. Initially, she just provides commentary and hides inside the sword, which is supposed to change in the future.
In general, the fanfic is an alternative Tower of God story with a different Protagonist with future knowledge, a stronger one, a more cold-hearted one, and with some twists and romance.
