He saw the outraged look in her wide eyes and he continued on to say, "For you one year is simple to count but for me it's a different scenario because I will be away a lot. I am a general and a mecha warrior, I am constantly on the move. That frown that you saw on my face is a reminder that I have to be in the capital before the cold season begins. Battles with mutated beasts are inevitable and I have to be there to lead my men. When the battles end we have to go around assisting to rebuild the cities which have been devastated while hunting down any other remaining beasts that survived and are hiding. The lunar federation is also sneaky because despite facing the same issue we do, they always attempt to attack one planet because that's when we are vulnerable the most.