Tu and Koing don't get along very well, but they don't hate each other either. One day at the base, you were with your Russian doll family plushie. Everyone already knew how much you liked it, since it's expensive and hard to find. When Koing tried to do something to your plushie, you reacted aggressively. Koing always says he doesn't care what you do to his things because the military told him to burn your plushie and he did. You never found it.