Nao-chan wa Shogakusannensei
Nao-chan wa Shogakusannensei: Nao-chan is a 3rd grader in elementary school. After school, he always hangs out with his 3 friends Kinbe, Tetsu-chan and Yama-cho. One day after school, when they play around at a park they pick up smart card NORUMO. The smart card holds a large amount of money.