The world and characters will be pretty similar to canon with a few differences in characters and power scaling
Dumbledor will be the canon one of the good but misguided old man
I'm not planning on any pairings as I'm not good at romance might add it at a later stage
The system Harry will have a system where he can enter a game world in his mind that being Minecraft the world is a basic one that you would normally spawn in through the system he can pull items from the game into the world, when items are pulled from the game they become real by that I mean they look like a real world item rather than a pixelated item (think of it as a texture pack that gets added to items when they move from one world to the other) the same is applied to items being brought into the mc world.
Example if he had a stone sword in mc he can pull it out into the real world as for weight and size the system will auto size the items and he can carry everything like a mc character
The inventory can also be used in the real world to store stuff but it has some restrictions such as items in the real world can not be brought into mc unless it is already in the world, if a item is not able to be brought the item slot in mc will be greyed out and unable until it is emptied in the real world or a mod is added that bring the item to mc.
Example- Harry can not bring a ak 47 into Minecraft unless he has a gun mod added that adds the ak 47 to the world as mc does not have guns in the vanilla version
The system can be upgraded through achievements such as acquiring a philosopher stone and understanding it to gain access to the transmutation table mod
Along with exchange by selling items to the system for points he can do changes like keep inventory in mc or inf durability tools though that will be for later
Also though I'm not gonna talk about it much Harry in this story is physically abused it will be showed near the beginning and will set Harry on his path