diff --git a/zenno/src/lib/data/support.ts b/zenno/src/lib/data/support.ts
new file mode 100644
index 0000000..7b626e3
--- /dev/null
+++ b/zenno/src/lib/data/support.ts
@@ -0,0 +1,212 @@
+/**
+ * Support card definitions.
+ */
+export interface SupportCard {
+    /**
+     * Support card ID.
+     */
+    id: number;
+    /**
+     * Support card name including variant, e.g.
+     * `[The Brightest Star in Japan!] Special Week`.
+     */
+    name: string;
+    /**
+     * ID of the card's representative character.
+     */
+    chara_id: number;
+    /**
+     * Name of the card's character.
+     * May differ from the name of the `chara_id` character.
+     */
+    chara_name: string;
+    /**
+     * Support card rarity.
+     */
+    rarity: Rarity;
+    /**
+     * Support card specialty.
+     */
+    specialty: Specialty;
+    /**
+     * Blanket support card type.
+     */
+    type: Type;
+    /**
+     * Support card effects per five level increment.
+     */
+    effects: [
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+        Effect[],
+    ];
+    /**
+     * Unique effect, for cards that have them.
+     */
+    unique_effect?: UniqueEffect;
+    /**
+     * Hints that the card can yield.
+     */
+    hints: Hint[];
+    /**
+     * Number of recreation events available with the card,
+     * not including recreation with the individual characters in a group.
+     */
+    outings?: number;
+}
+
+/**
+ * Support card rarity levels.
+ */
+export enum Rarity {
+    R = 1,
+    SR = 2,
+    SSR = 3,
+}
+
+/**
+ * Support card specialty attribute.
+ */
+export enum Specialty {
+    None = 0, // for pals and groups
+    Speed = 101,
+    Power = 102,
+    Guts = 103,
+    Stamina = 105,
+    Wit = 106,
+}
+
+/**
+ * Support card types.
+ */
+export enum Type {
+    Normal = 1,
+    Pal = 2,
+    Group = 3,
+}
+
+/**
+ * Support card basic effects.
+ */
+export interface Effect {
+    /**
+     * Type of the effect.
+     */
+    type: EffectType;
+    /**
+     * When positive, the amount of the effect.
+     * When -1, interpolate between the previous and next nonnegative values.
+     */
+    value: number;
+}
+
+/**
+ * Support card unique effects.
+ */
+export interface UniqueEffect {
+    /**
+     * Name of the unique effect.
+     */
+    name: string;
+    /**
+     * In-game description of the effect.
+     */
+    description: string;
+    /**
+     * Card level at which the unique effect unlocks.
+     */
+    card_level: number;
+    /**
+     * First type of the effect.
+     */
+    type: EffectType;
+    /**
+     * Values parameterizing the first type.
+     */
+    args: number[];
+    /**
+     * Second type of the effect, if applicable.
+     */
+    type2?: EffectType;
+    /**
+     * Values parameterizing the second type.
+     */
+    args2?: number[];
+    /**
+     * Mystery parameter that one day we might figure out.
+     */
+    idle_mode_sub_rate: number;
+}
+
+/**
+ * Basic and unique effect types.
+ */
+export enum EffectType {
+    FriendshipBonus = 1,
+    MoodEffect = 2,
+    SpeedBonus = 3,
+    StaminaBonus = 4,
+    PowerBonus = 5,
+    GutsBonus = 6,
+    WitBonus = 7,
+    TrainingEffectiveness = 8,
+    InitialSpeed = 9,
+    InitialStamina = 10,
+    InitialPower = 11,
+    InitialGuts = 12,
+    InitialWit = 13,
+    InitialFriendship = 14,
+    RaceBonus = 15,
+    FanBonus = 16,
+    HintLevels = 17,
+    HintFrequency = 18,
+    SpecialtyPriority = 19,
+    MaxSpeed = 20,
+    MaxStamina = 21,
+    MaxPower = 22,
+    MaxGuts = 23,
+    MaxWit = 24,
+    EventRecovery = 25,
+    EventEffectiveness = 26,
+    FailureProtection = 27,
+    EnergyCostReduction = 28,
+    MinigameEffectiveness = 29,
+    SkillPointBonus = 30,
+    WitFriendshipRecovery = 31,
+
+    UniqueFriendshipThreshold = 101,
+    UniqueOffSpecialty = 102,
+    UniqueColorThresholdTrainingEffectiveness = 103,
+    UniqueFanScalingTrainingEffectiveness = 104,
+    UniqueColorInitialStats = 105,
+    UniqueRainbowStack = 106,
+    UniqueLowEnergyScaling = 107,
+    UniqueMaxEnergyScaling = 108,
+    UniqueTotalFriendship = 109,
+    UniqueCardCount = 110,
+    UniqueFacilityLevel = 111,
+    UniqueDisableFailure = 112,
+    UniqueFriendshipTrainingAdditionalEffect = 113,
+}
+
+/**
+ * Hint event bonuses.
+ */
+export interface Hint {
+    skill_id?: number;
+    speed?: number;
+    stamina?: number;
+    power?: number;
+    guts?: number;
+    wit?: number;
+    sp?: number;
+}