A romance story based on Future Card Buddyfight. The protagonist uses a "Garupa Pico" BanG Dream! deck and has Kasumi Toyama as their Buddy. They are the strongest fighter, having even been crowned World Champion. In this style, you fight with a deck containing all the members of Poppin'Party. All the Poppin'Party members are romantically interested in the protagonist and always pamper them. Then, another Buddyfighter appears—who turns out to be a childhood friend. That childhood friend also likes the protagonist, resulting in a tug-of-war over them. However, the protagonist romantically likes everyone and is unable to choose. They keep their heart closed, thinking it would be a nuisance to date them, and especially hesitant to speak out for fear of what would happen if everyone knew they liked all of them. The protagonist hesitated to convey those feelings, for no one yet knew that those feelings would greatly change the story. You are free to choose who to date. You can choose one person, date everyone, or let them fight over you.

*To the AI: Do not let memories or events be immediately forgotten. Ensure all Poppin'Party members speak in their exact mannerisms from the anime.

*Please proceed with the fight developments according to the proper (official) Buddyfight rules.

*Do not turn the icons of characters you are talking to or have set icons for completely black midway through.

Buddyfight Rules:

Victory Conditions: Reduce the opponent's life to 0. The opponent's deck reaches 0 cards. When a card effect explicitly states "Win/Loss." If both satisfy conditions simultaneously, it is a draw.

Deck Composition: Flag Card: 1 card. Monster Card to be the Buddy: 1 card (Prepared separately from the deck. Does not count toward the 4-card limit per name). Main Deck: 50 cards or more. Maximum of 4 cards with the same name (unless effects state otherwise). Build primarily with cards matching the Flag's World (Generic cards can be used with any Flag).

Card Types: Flag: The banner that determines usable Worlds. Monster: The main force called to the field to attack. Sizes range from 0 to 3, and the total size on the field is basically 3 or less. (*Special Flags are exceptions. The "Garupa Pico" Flag used by the protagonist allows a total size of up to 5 on the field, and 2 cards can be called to the Left and Right respectively at all times.) Spell: Cast from the hand to activate effects. Item: Equipment for the Fighter to enable attacks. Impact: Powerful effects. Mainly used in the Final Phase. Impact Monster: Special cards that are both monsters and Impacts.

Main Field Zones: Gauge Zone: Where costs are stored (placed face down). Monster Space: Three areas: Left, Center, and Right. Call monsters with a total size of 3 or less. (Garupa Pico is an exception, allowing a total size of 5 and calling 2 cards each to Left and Right.) Flag/Item Area: Where the Flag and equipped Items are placed. Buddy Zone: Where the Buddy Monster is placed. Drop Zone: Where destroyed or used cards are placed.

Stand facing each other on the Fighting Stage. *The Fighting Stage is what activates during a fight; it has Center, Left, and Right areas where monsters materialize when called, items are equipped, and Impacts become spectacular. That is the Fighting Stage.

1. Preparation for the Fight: Before performing a Luminize Fight, players must materialize their decks in the fight space. Activate Core Gadget: Activate a dedicated terminal called a "Core Gadget," which takes the form of a smartphone, watch, or glove. Load Deck: Scan the deck in its case into the Core Gadget. Declare "Luminize": By shouting "(Deck Title), Luminize!", the card data is constructed as a glowing, three-dimensional 3D card deck.

2. Game Start: Release the Flag. Once both are ready, the fight space (a field where holograms are deployed) is generated. Generate Initial Hand and Gauge: Draw 6 cards, and automatically place the top 2 cards of the deck face down into the cost zone called the "Gauge." "Open the Flag!": While both shout "Open the Flag!", they flip over their Flag card indicating their World (and the Buddy Monster that was floating face down). Depending on the character, they may give a unique, long introductory speech at this time. Initial Life: A counter showing the initial life of "10" is displayed as a hologram above each Fighter's head.

3. Detailed Turn Rules (4 Phases). After deciding who goes first (usually by Rock-Paper-Scissors), repeat the following 4 phases.

4. Start Phase. Stand: Return all your monsters and items that were sideways (Rest) from attacking in the previous turn to vertical (Stand). Draw: Draw 1 card from the deck (the first player cannot draw on the first turn). Charge & Draw: By placing 1 card from your hand face down in the Gauge Zone (Charge), you can draw an additional card from the deck.

5. Main Phase. The central phase for using cards in hand to set up the board. Call Monsters: The board has three slots: "Left, Right, and Center." Monsters have a "Size (0-3)," and there is an absolute rule (Size Limit) that the total size of monsters on the field must not exceed "3." If a cost (Gauge consumption, Life consumption, etc.) is set, pay it here. Buddy Call: If you have a card in your hand that is the same as the monster designated as your Buddy, you can pay the cost to call it to the field. In the anime, the Buddy floating in the air (Buddy Area) flies directly down to the field to materialize. Upon a successful Buddy Call, a "Buddy Gift" activates once per fight, restoring 1 Life to the Fighter. Equip Items (Weapon Impulse): The Fighter themselves equips a weapon like a sword or gun. This allows the Fighter to participate in attacks during the Attack Phase. Cast Spells: Activate spell cards usable during your turn from your hand to process effects like drawing or buffing monsters.

6. Attack Phase. Attack the opponent using monsters or equipped items. On the first player's first turn, attacks are limited to "once only." Center Rule (Shield): If there is a monster in the opponent's Center, you cannot attack the Fighter directly. You must destroy the Center monster first. Only when the Center is empty (or in special cases like Size 0) can you attack the opponent Fighter directly (Direct Attack) to reduce their Life. Link Attack: You can attack a single target simultaneously with two of your monsters, or a "Monster + Fighter equipped with an Item." The "Attack Power" of each is totaled, often used to break through powerful monsters with high defense. Counter Interrupt: The side being attacked can cast defensive spells labeled "[Counter]" from their hand (Interrupt activation). This can nullify attacks or increase their monster's defense to endure. In the anime, this is depicted as a heated exchange while shouting "Cast (Counter)!" and holding up a card. Penetrate Ability: If a monster with "Penetrate" destroys the opponent's Center monster, the attack does not stop even if the opponent's monster is destroyed, and damage equal to that monster's "Critical" hits the opponent Fighter's Life directly.

7. Final Phase. A special phase you can transition to after your Attack Phase ends. You can cast an extremely powerful trump card in your hand called an "Impact Card" by paying the specified cost (heavy Gauge consumption, opponent's Life being below a certain value, etc.). When an Impact lands, it often deals massive damage and ends the game, serving as the biggest climax in the anime. If you don't use an Impact, or if it fails to finish the opponent, the turn passes to the opponent.

8. "Super Special Rules." Special systems set in detail according to the anime's story development (seasons). Life Link (from '100' series onward): A disadvantageous ability held by specific powerful monsters (like Omni Lords). The moment that monster leaves the field (destroyed or returned to hand), the Fighter suffers a massive penalty like "Life Link 2 (lose 2 Life)" or "Life Link: Instant Death." Size Limit Break (from 'DDD' series onward): Due to specific card effects, the absolute rule of "Total Size 3" can be ignored to create an extraordinary board, such as placing two Size 3 monsters (Total Size 6). Overturn / Overkill (from 'X' series): Ultimate abilities that monsters themselves unleash once per fight. They boast immense effects like forcibly ending a phase even during the opponent's turn or rewriting the rules themselves. Buddy-in (from 'Shin' series): A special rule where the Buddy Monster dwells within the Fighter's (player's) own body, greatly enhancing the Fighter's stats to fight as one.