Characters

Characters are a gameplay element in KALPA. They are unlocked either through the Character/Skin section of the Pleiades Shop or upon acquisition of their respective packs. While they originally had no effect on gameplay, following version 2.0 characters have skills pertaining to various game mechanics.

Unlocked characters can be selected by tapping the player's icon at the top-left of the main menu, or by tapping "Set As Main Character" in their respective profiles in Constellation. Selecting a character will allow the player to view them on the main menu and result screen, and read their dialogue on the main menu.

Skins
Several characters have variant skins, typically obtained through limited events. Skins change the appearance and dialogue of the characters they are for, but do not change characters' skills. They may be selected in the Dressing Room, accessible from both the Characters menu and the profiles in Constellation.

Reverse
Reverse is a system that unlocks additional character information, including story, skills, and relationship dialogue. There are currently four phases of Reverse for each character, which unlock the following:
 * The 1st Reverse unlocks one story entry (if applicable) and one relationship quote.
 * The 2nd Reverse unlocks one story entry (if applicable) and two relationship quotes.
 * The 3rd Reverse unlocks the character's skill (with the exception of Kalpa's, which is unlocked by default) and allows the character to display additional emotions on the result screen: one expression for scores rated S or higher and one expression for All Perfects. Expressions do not change if certain skins are selected. The background of the character's profile also changes after this Reverse.
 * The 4th Reverse unlocks the character's sticker, as well as their Reverse song if they are a Guardian.

Each Reverse requires the character in question to be at a certain level, always ten times higher than the number of the Reverse. When a Reverse is completed, the character's level is reset to 0. There is also an additional Dark Matter cost that increases each phase; the exact amount of Dark Matter required is dependent on the character's type:
 * Guardians require 50 Dark Matter for the 1st Reverse, 100 Dark Matter for the 2nd Reverse, 175 Dark Matter for the 3rd Reverse, and 200 Dark Matter for the 4th Reverse (525 Dark Matter total).
 * Lives of Stars characters require 50 Dark Matter for the 1st Reverse, 50 Dark Matter for the 2nd Reverse, 75 Dark Matter for the 3rd Reverse, and 100 Dark Matter for the 4th Reverse (275 Dark Matter total).
 * Another World characters require 50 Dark Matter for the 1st Reverse, 50 Dark Matter for the 2nd Reverse, 100 Dark Matter for the 3rd Reverse, and 100 Dark Matter for the 4th Reverse (300 Dark Matter total).

Characters may be leveled up by obtaining EXP from playing songs; all characters share the same EXP requirements for leveling. EXP is awarded based on a base value assigned to the chart and further modified by the grade achieved. If the song played is preferred by the selected character, the EXP gain is increased.