Conquest of Realms [DROPPED]

Arthur lived in the realm called Beta, this place's only rule is "survival of the fittest". Wherever you go you'll see fights that mostly result in death. Arthur is only 18 years of age but has seen and experience his fair share of struggles and battle.
One fateful night, when he is stargazing at his favorite spot in a mountain trying to appreciate the beauty of the cosmos and stars. He saw a fast moving object going directly at his location and with quick movements he is already 5 meters away from the impact location.
After the projectile landed Arthur moves in closer to see what is this object and what he saw is a cube the size of a fist. Suddenly it turned into liquid form and entered his body trying to move up to his brain, after this Arthur lost consciousness and fell on the ground.
An hour have passed Arthur is now awake then suddenly he began to see a strange interface that whatever he tries to focus on it will give a detailed information about it. Then a voice rung in his mind saying "I'll grant you power to dominate everything in the 6 realms, what do you say"?

Release Rate: 3 chapters per week, MWF
Chapter Length: 600 to 800 words