From the developer of Shironeko Project, Colopl, mobile RPG PaniPani (PaniPani-パラレルニクスパンドラナイト-) is already available for download. The game is a 2D side scrolling RPG.
In PaniPani, 13 high school students are sent to another dimension for reasons unknown. Players control these students to defeat ememies for collecting materials for food and gears. The food and gears decide how strong the characters are. It also supports collaborative mode.