Promise Reunion

An IRyS-led Promise team under Mumei, who takes 50 off a hit each turn.

BTier
75.7%Win rate vs the field
#36 of 49JP ranking
JPCard pool
DRound robin tier: 38.5% head-to-head, #39 of 49

How the deck wins

Mumei's 2-power oshi skill gives a Promise holomem -50 damage on the opponent's turn, so your 2nd IRyS survives hits she otherwise wouldn't.

2nd IRyS hBP08-014 is the main attacker: 130, and every holomem on stage gets Arts+20 per purple cheer on her.

Kronii, Baelz and Mumei 1sts add cheers, special damage and search, and Ruler of Time finds Promise members.

Deck list

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Oshi and holomem (33)
Support (17)
Cheer deck (20)
QtyCardTypeCard no.
1Nanashi MumeiOshihBP01-002
1Hakos BaelzDebuthBP06-040
4IRySDebuthBP08-008
4IRySDebuthBP08-009
1Nanashi MumeiDebuthBP01-016
1Ouro KroniiDebuthBP01-092
1Ouro KroniiDebuthBP07-051
1Hakos Baelz1sthBP06-043
1IRyS1sthBP01-030
1IRyS1sthBP08-010
4IRyS1sthBP08-011
3IRyS1sthBP08-012
1Nanashi Mumei1sthBP01-019
3Ouro Kronii1sthBP01-094
2IRyS2ndhBP08-013
4IRyS2ndhBP08-014
1Ouro Kronii2ndhBP01-095
1Bloom StageEventhBP06-090
1Borderline Evil RobotEventhBP07-094
1DIYMikoEventhBP05-079
4Ruler of Time -Promise-EventhBP07-097
1So, That Makes You My EnemyEventhBP01-108
3SorAZ CelebrationEventhBP05-080
1Friendly PCItemhBP05-074
4Normal PCItemhBP01-104
1GuyRySFanhBP08-106
7White CheerCheerhY01-001
13Purple CheerCheerhY05-001

Matchups (round robin)

In the JP round robin, each of the 49 JP specialist AIs played every other one 400 times, half going first. This deck won 38.5% of those games: tier D, #39 of 49. It won 15 of its 48 matchups (31 below 40%). These are AI-vs-AI results, not tournament data.

Best matchups

  1. NePoLaBo Teamwork84.0%
  2. Risu ID Family78.2%
  3. Riona FLOW GLOW Tiara69.8%
  4. Chloe holoX-lot68.2%
  5. Nerissa Demon Song65.5%

Toughest matchups

  1. Towa Selection11.0%In its wins, Towa Selection attacks with "To Become a Full-Fledged Devil" from 2nd Tokoyami Towa (hBP09-057) 2.3 times a game, and attacks with "Top Student at the Underworld Academy" from 2nd Tokoyami Towa (hBP09-057) 1.8 times a game, and downs 4.8 holomems a game. When Promise Reunion wins, it downs 4.5 holomems a game (vs 1.8 in its losses) and attacks with "Prismatic Anthem" from 2nd IRyS (hBP08-014) more often (4.6 vs 1.6 times a game).
  2. Mio-oshi Baelz Elizabeth11.2%In its wins, Mio-oshi Baelz Elizabeth attacks with "It's not fun without you" from 1st Hakos Baelz (hBP07-045) 5.7 times a game, and downs 4.9 holomems a game. When Promise Reunion wins, it downs 3.1 holomems a game (vs 1.2 in its losses) and attacks with "Prismatic Anthem" from 2nd IRyS (hBP08-014) more often (3.0 vs 1.5 times a game).
  3. Lamy Selection13.5%
  4. AZKi Frontier15.8%
  5. AZKi-oshi Chloe Lui Slot16.2%

vs Towa Selection

11.0%

14% going first, 8% going second. Games last 12.5 turns on average (400 games).

Most wins come from taking the opponent's last life card (77% of wins). In a loss, the opponent usually takes its last life card (80% of losses).

In its wins, Towa Selection attacks with "To Become a Full-Fledged Devil" from 2nd Tokoyami Towa (hBP09-057) 2.3 times a game, and attacks with "Top Student at the Underworld Academy" from 2nd Tokoyami Towa (hBP09-057) 1.8 times a game, and downs 4.8 holomems a game. When Promise Reunion wins, it downs 4.5 holomems a game (vs 1.8 in its losses) and attacks with "Prismatic Anthem" from 2nd IRyS (hBP08-014) more often (4.6 vs 1.6 times a game).

Key cards

2nd IRyS hBP08-014 (main attacker)

Prismatic Anthem: 130; all your holomem get Arts+20 per purple cheer on her. Bloom: 30 special damage to their center.

Your finisher.

Nanashi Mumei (oshi)

2 power: on the opponent's turn, a Promise holomem takes -50 damage. SP: search an event.

Keep 2 power ready to protect your 2nd IRyS.

Debut IRyS hBP08-008

Collab: going second on turn 1, a Promise holomem gets Arts+30; draw 1 with a purple cheer.

The trained AI collabs it early in most games.

1st IRyS hBP08-011

30, draw with a purple cheer. Collab: draw with a white cheer.

Bloom it on turn 2.

1st Kronii hBP01-094

Bloom: search a cheer matching a Promise holomem's color.

Free cheers for IRyS.

Ruler of Time -Promise-

All-Promise stage: take 2 Promise holomem.

Your main search card.

Game plan

Turns 1–2

Early game

Collab IRyS and bloom.

  1. Collab debut IRyS hBP08-008 early.
  2. Bloom 1st IRyS hBP08-011 and 1st Kronii hBP01-094.
  3. Play Ruler of Time and attach GuyRyS.
Turns 3–4

Mid game

Get 2nd IRyS out.

  1. Bloom 2nd hBP08-014 around turn 3; the bloom hits for 30.
  2. Give her purple cheers.
  3. Keep 2 holo power for Mumei's shield.
Turn 5 on

Late game

Attack and protect.

  1. Attack with Prismatic Anthem every turn.
  2. Use Mumei's -50 on the opponent's big hit.
  3. Baelz's collab adds 30 special damage when you need a knockout.

What the trained AI does

In 60 test games the trained AI won 83%, against 58% for the general AI playing the same deck. It finished games in about 8 of its own turns.

Habit (per game)Trained AIGeneral AIWhat it means for you
2nd hBP08-014 damage674510Make 2nd IRyS the attacker.
2nd hBP08-013 damage6294hBP08-013 is backup.
Baelz debut damage364Use Baelz's chip damage.
Debut IRyS collabs on turns 1-20.9—Collab IRyS early.
Games finished in (your turns)8.29.0Protecting your 2nd wins faster.

Practice it

  1. In Match Lab's Player vs Bot, play against the Promise Reunion (JP) Specialist AI first and watch how it sets up.
  2. Then pilot the deck yourself against the Generalist AI.
  3. Aim to win in about 8 of your own turns, like the trained AI does.

Last updated 2026-11-11.