Opus

The Opus is a special location in  that becomes accessible after completing the mission Streets In Chaos. It serves as a key hub for the player allowing management of the party and inventory between missions. It is essentially also a story character as it has dialogue and talks to the player character.

Recruitment
Recruitment allows the player to recruit new units into the roster for a fee. Four units are up for offer at a given time. Players can pay a fee for "New Contracts," refreshing the available units for recruitment.

Job Captain
The Job Captain offers several services:
 * Changing the primary and secondary jobs on units in the roster.
 * Viewing the current and upcoming abilities for each job.
 * Changing a unit's currently assigned abilities.
 * Viewing a unit's stats.
 * Changing units' equipment.

Character Customization
The appearance of all characters in the current roster can be changed here.

Store
The store offers equipment and items for sale.

When the Opus first becomes available, the store's inventory includes the following:

Story character
The Opus is capable of talking with people and seems to be sentient. While it appears to have powers over time, the dialogue when the player character first encounters it suggests it may have limits in that it must obey causality.