- Fight! - a girl of seven years old was balancing on a fallen log and maintained a confident stance of a fighter. She looked over her fists at the boy, who had just stepped onto the opposite edge of the log, but he felt less confident in wanting to be there. - Hey! What are you frozen?

Without waiting for his answer, she deftly ran along the log and pushed him with her shoulder from all the running start. The boy fell. The girl towered over him with a triumphant smile. She did not see his face, he turned away and breathed heavily. He didn't turn around until he...