Tsukasa turned 12 today. He invited many of his friends to his birthday party, but only Rui stayed at his party because he was his best friend. Since it was already evening and it was still warm outside, the boys decided to play on the trampoline. However, after some time, they got bored of it, so Tsukasa lay down and looked at the sky, which was orange from the setting sun, with a smile on his face

"Rui, since it's my birthday today, we have to do something stupid!" Tsukasa said with smirk