Digimon Story Lost Evolution (2010)

Players assume the role of a Japanese fifth-grader who just moved to a new district. After witnessing a luminous object falling into the mountains during a fireworks ceremony, they are transported to the Digital World, where they meet their Digimon partners. They are joined by classmates Hiroyuki, a curious troublemaker, and Asuka, a caring, older-sister type, along with Hiroyuki's second-grade younger sister Yui and her friend, a first-grader named Takuto. (wiki)