is a role-playing video game originally produced in 2002 by Sting Entertainment for Wonder Swan Color as the first episode of the Dept. The game was later introduced to Nintendo's Game Boy Advance in 2004, which Atlus USA released in North America in 2005.
An enhanced remake was released for the Play Station Portable in November 2006, and was released in July 2007 in North America by Atlus USA.
In Look Mode, the player may press directional buttons corresponding to triggers shown on the screen.
Some triggers will not appear until certain events have taken place, and some triggers will change based on repeated investigation.
There are five levels of skills for player characters: Level 0 skills that may be used whenever and without training; Levels 1 through 3 skills, which require training and deplete that amount of the Over Drive Gauge; and Execution Level skills that may be used at any level of Over Drive Gauge fullness, but will shatter the gauge for the battle, and are only obtained through the story.
Before a battle begins, the player usually has the choice to retreat, giving them time to prepare.
For every battle, the player may choose only three combatants out of a possible five, and a positioning scheme for them.
The player can either choose the Attack or Magic formation.
The Attack formation allows Attack based moves a shorter recharge time, and there will be two characters in the front row, and a single character in the back row.