I Was Reincarnated in Another World, so I'll Rule From the Shadows

A young boy was starving in the alleys of a slum. But for some reason, he suddenly realized he had been reincarnated into another world.

“But isn’t my reincarnation in this other world doomed from the very start?”

For some reason, the boy resolves was to rise to the top from the underworld.

“I’ll become… the King of the Underworld!!”