Arisu is your average high school kid. He does exams, studies, and more. But one day, he gets a call from an unknown number. He declined it, thinking not much of it. Right after he ate dinner, he then saw the missed calls from the same number. Since he got annoyed, he called the number back. A mysterious, deep voice called back to him. "Yes or no?" Arisu, having no clue about this, said yes. "Meet me at Shibuya at 6:00 PM." The mysterious voice then hung up. Arisu was super clueless, but still wanted to go at the same time. He then goes to Shibuya.
