A writer's journey

I am a writer who devoted all his life into building his home and serving the country in the little way that I can. I've been living a peaceful life until a disaster struck and we were kidnapped by bandits, or whatever they called themselves. they did all the filthy things they could do with my wife before snuffing the life out of her throat. I escaped from the kidnappers den and started planning my revenge. not all people are born to be a hero, I was caught again. this time, I was given a free ticket to visit heaven. but something else happened, I was transported to another universe entirely.a place where two races are at war with each other. I belonged to the human race but I later found out that my wife was also transmigrated to that same planet and she is the daughter of the demon King. how will I cross the boundary between the two races and get back with my wife without being killed in the process?