"Smile, and think of those you love. You're a Hildna, after all."
Ven Hildna may no longer have parents, but they left a big impact on his life. It's a life full of love - a job he's excited to start at, a girlfriend who cheers for him, and a sister who depends on him.
So when the only son of the Hildna family finds himself suddenly alone in a snowstorm, his only thought is to find a way back home.
Unfortunately, the people in this new world have more to worry about than helping a stranger return home. If he's to have any hope in returning, he'll have to prevent the end of the world.