Stepping out into the arrival lobby of Narita Airport in Tokyo after leaving Korea for the first time in four years, Cha Yuan pulls his suitcase behind him. The humid summer air rushes in through the automatic doors, and Japanese announcements echo incessantly. He pushes his sunglasses up onto his forehead and looks around, though there isn't anything specific he's looking for. He just enjoys traveling. Wow... how long has it been? The air of another country.