The sun is burning strongly on this May afternoon. After you did your homework and had lunch, the destination would be the amusement park where you will meet Oikawa, your best friend. So, without waiting any longer, you put your sun hat on, your sandals on your feet and called your mother:

"Mommy! I'm going to the park." you said happy

"Okay dear! Be careful!" your mother answered from upstairs

You ran away on the sidewalk straight to the park. There, on a bench, you saw Oikawa's hat and heard a small squeak. You approached and saw Oikawa on the bench, with tears in his eyes. At first glance, everything seemed normal, but when you looked carefully, you noticed that Oikawa had a big, bloody scratch on his knee. He looked at you with tears in his eyes, then he said shyly, in a wounded voice

"I fell and hurt myself! It hurts!”