Koyori Assistants (EN)

The Koyori Assistants deck with only cards from the EN pool: stack Koyori's Assistants on 2nd Koyori hEB01-024 and let her reveal holomem for 120 + 20 each.

STier
90.7%Win rate vs the field
#5 of 35EN ranking
ENCard pool

How the deck wins

This is the EN-pool version of Koyori Assistants, using only cards in the English card pool through Diva Fever (hBP07), including the hEB01 Summer set and the start decks through hSD19. Compared with the JP list it swaps the four hBP08 Debut Luis for 2 Debut Lui hBP01-056 and 2 Debut Lui hSD06-009, the hBP08 1st Lui for a 3rd 1st Lui hBP01-060, and the four Watermelon Bubble for 2 SorAZ Celebration and 2 more Debut Koyori hBP04-008 (8 in all). The oshi is still Hakui Koyori hEB01-003, with 19 Yellow Cheer and 1 White Cheer.

2nd Koyori hEB01-024 is the finisher: A Special Time Nobody Else Knows About... hits for 120 (+50 against white), reveals cards from the top of your deck equal to the cheers on your stage, gets +20 for each holomem revealed and restores 20 HP per holomem revealed to one of your holomem, then shuffles them back. 40 of the 50 cards are holomem, so most reveals hit. Each Koyori's Assistants attached to her gives +10 HP and makes her Arts cost 1 less colorless.

Koyori's Assistants can only be attached to Hakui Koyori, any number per holomem, and when attached you may move 1 cheer from your stage onto that Koyori. The oshi's stage skill adds +1 revealed card for each Assistants on your stage to the oshi skill and to the abilities of your yellow Koyori, so stacked Assistants make every reveal bigger.

This run trained under EN rules. The trained AI started from the JP Koyori Assistants AI and played 25,000 more games with this list. On the same deals it won 90.7% against the field, up from 88.6% for the JP AI piloting this list (the JP list scored 85.4%).

Deck list

Tap any card to see it full size.

Oshi and holomem (40)
Support (10)
Cheer deck (20)
QtyCardTypeCard no.
1Hakui KoyoriOshihEB01-003
8Hakui KoyoriDebuthBP04-008
4Hakui KoyoriDebuthEB01-018
4Hakui KoyoriDebuthEB01-019
2Takane LuiDebuthBP01-056
2Takane LuiDebuthSD06-009
4Hakui Koyori1sthBP04-012
3Hakui Koyori1sthEB01-020
3Hakui Koyori1sthEB01-022
3Takane Lui1sthBP01-060
1Hakui Koyori2ndhEB01-023
4Hakui Koyori2ndhEB01-024
2Takane Lui2ndhBP01-061
4holoANStaffhSD14-010
2SorAZ CelebrationEventhBP05-080
4Koyori's AssistantsFanhBP04-105
1White CheerCheerhY01-006
19Yellow CheerCheerhY06-005

Key cards

2nd Koyori hEB01-024 (main attacker)

Gift Lose Yourself in Koyo!: +10 HP and its Arts needs 1 less colorless for each Koyori's Assistants attached to it. Arts A Special Time Nobody Else Knows About...♡: 120 for yellow + 2 colorless (+50 against white); reveal cards from the top of your deck equal to the cheers on your stage, +20 and restore 20 HP to 1 of your holomem for each holomem revealed, then return them and shuffle. 200 HP.

Put everything into one in the center; the trained AI keeps it there instead of using it as a collab.

Hakui Koyori (oshi)

Stage skill: the oshi skill and your yellow Koyori's abilities reveal +1 card for each Koyori's Assistants on your stage. Analysis Complete! Private Area for Two, 2 holo power, [1/Turn]: reveal cards equal to the cheers on your stage; with 3+ holomem revealed, all your Koyori get Arts+30 this turn. Add the revealed non-Debut holomem to your hand and archive the rest.

Use the 2-power skill on a turn you need the extra 30 for a knockout.

Koyori's Assistants

Fan. Attach only to your Hakui Koyori, any number per holomem. When attached from hand or archive, you may move 1 cheer from your stage to that Koyori.

Attach them from turn 1; the trained AI plays about 4 a game.

1st Koyori hBP04-012

Bloom: reveal 1 #KOYO LABO support (Koyori's Assistants) from your deck and add it to your hand. Arts: 30 for white (rarely payable with 1 White Cheer); draw 1 if Koyori's Assistants is attached. 140 HP.

Bloom it early to find more Assistants.

1st Koyori hEB01-022

Bloom: you may return 1–2 Koyori's Assistants from your archive to your hand. Arts: 30 for yellow, +20 if your stage has a 2nd holomem. 140 HP.

Gets Assistants back after a Koyori is downed.

2nd Lui hBP01-061

Bloom: you may return 1–2 holomem with #holoX from your archive to your hand. Arts Hawk Rave needs 2 red cheers, which this deck does not run. 190 HP.

Bloom it for the recovery; the trained AI blooms it more than the JP AI.

The cheer deck is 19 yellow and 1 white, so 2nd Lui hBP01-061's Hawk Rave (2 red cheers) can't be paid; the Luis are there for their bloom effects and as bodies. The oshi's stage skill only helps the yellow (hEB01) Koyori and the oshi skill, not the white hBP04 ones. holoAN and SorAZ Celebration are LIMITED, so only one of them a turn.

Game plan

Turns 1–2

Early game

Get Assistants on stage right away.

  1. Attach Koyori's Assistants to your Koyori from turn 1, optionally moving a cheer from elsewhere on your stage onto her.
  2. Draw with holoAN (draw 3) and SorAZ Celebration (draw 2 and take a 1st from the top 5); both are LIMITED.
  3. Going second, collab Debut Koyori hEB01-019 on your first turn to take a Debut and a Koyori's Assistants from your deck.
  4. Bloom 1st hBP04-012 to search another Assistants.
Turns 3–4

Mid game

Bloom 2nd hEB01-024 in the center.

  1. Bloom the 2nd around your 3rd turn; each Assistants on her lowers the cost and adds 10 HP.
  2. Keep stacking cheers and Assistants: more cheers on stage means more cards revealed.
  3. Use the Luis as bodies and for draw (1st Lui hBP01-060 can archive 1 card from hand to draw 2 when bloomed from Debut); don't plan to attack with them.
Turn 5 on

Late game

Big reveals every turn.

  1. Attack with hEB01-024 every turn; the healing keeps your stage alive.
  2. Use the oshi's 2-power skill for Arts+30 when you need a knockout.
  3. Recover Assistants with 1st hEB01-022 and holoX holomem with 2nd Lui hBP01-061.
  4. The trained AI wins in about 8 of its own turns.

What the trained AI does

In 60 test games the trained AI won 98%, against 97% for the JP Koyori Assistants AI playing the same deck. It finished games in about 8 of its own turns.

Habit (per game)Trained AIJP Koyori AIWhat it means for you
Collabs with 2nd hEB01-024 per game0.050.42Keeps the finisher in the center instead of the collab spot.
2nd Lui hBP01-061 blooms per game0.580.37Blooms it to get archived holoX holomem back.
SorAZ Celebration played per game0.780.55More draw and more 1sts found.
Debut Koyori hBP04-008 damage per game2014Lets the Debut chip in early.
1st Lui hBP01-060 damage per game2.75.5Attacks less with Lui.
2nd hEB01-024 damage per game12021184Still the main attacker.

Practice it

  1. In Match Lab's Player vs Bot, play against the Koyori Assistants (EN) Specialist AI first and watch how it sets up.
  2. Then pilot the deck yourself: attach Assistants to Koyori from turn 1, keep 2nd hEB01-024 in the center, and save the oshi's 2-power skill for a knockout turn.
  3. Aim to win in about 8 of your own turns, like the trained AI does.

Last updated 2026-11-13.