Isekai Utopia

Dev was the man who once had glimpse of happiness, but all of it was taken away when invasive space species attacked his home planet. In his last struggle, he blew himself up as the last standing human, hoping to take at least few of them with him.

But he was given another chance. Isekai'd in another world where thrives many non-humanoid and humanoid intelligent species, including Humans.

Will Dev be able to make a new home to protect those he cares about from this cruel and ruthless magical mediaeval world?

(There be nation building, advance military and comedy as well)