Ranko Tsukigime's Longest Day, released in Japan as Short Peace: Tsukigime Ranko no Ichiban Nagai Hi (ショートピース 月極蘭子のいちばん長い日?), is a side-scrolling platform game directed by Yohei Kataoka and published by Bandai Namco Games for the PlayStation 3. The game's story was written by Goichi Suda. The game follows the titular heroine, a schoolgirl-assassin who is tasked with killing her own father.
The game puts players in the role of the eponymous Ranko Tsukigime, as she races through levels attempting to outrun a wave of spirits chasing after her. Ranko's basic maneuverability allows her to jump, hover across long gaps, slide under obstacles, and jump off walls. Ranko also has a melee attack which can destroy enemies, as well as reflect enemy fire. By destroying enemies, the player can trigger chain reactions which may automatically destroy other nearby enemies. Along with some areas requiring the players to defeat all enemies in an area to progress, defeating enemies helps fuel ammunition for a fire-arm which can be used to push back the pursuing spirits in case they get too close.
Source: Wikipedia, "Short Peace", available under the CC-BY-SA License.