Riki, a 10-year-old boy, runs away from home, following a mysterious emergency signal sent by a shiny stone. It takes Riki to the breathtaking parallel world of “Yourland” where science peacefully coexists with nature. 　　The shining stone merges with Riki by hiding in his heart. It seems everybody in Yourland is eager to procure this treasure, as it is the core of Yourland’s powe... (展開全部)