The Book of Lagier

The great Demon King Embilden was the first to unite the demon world
One day a human dared summon the Demon King It was the greedy and fat
Prince Lagier Lou Jerlayla Rodwill
However while summoning the Demon King he had made a mistake in the process which caused his death
Lagiers body is forcefully frozen because of the contract he had made with the Demon King
Well I might as well just grant him his wish
The Demon King decides to become Lagier and grant the wish the Prince had before he was frozen to death
Until the day the kingdom of Jerlayla rules the world with power unmatched by anyone
This is the start of a new legend
I should start by losing weight
I need to go on a diet first