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Union ArenaJapanConfirmed· 1 srcNew expansionOct 18, 2026 · 3 min read

Union Arena Magic High School booster lands January 29, 2027

Bandai's The Irregular at Magic High School booster for Union Arena costs 385 yen (about $2.44) a pack in Japan, with planned foil-stamped voice-cast autographs and a serial-numbered AP campaign.

· published · updated
Union Arena Magic High School booster lands January 29, 2027
© Bandai

The Irregular at Magic High School is joining Union Arena with its own booster pack, and the Japanese release date is Friday January 29, 2027. Packs carry a manufacturer's suggested price of 385 yen (tax included), about $2.44 at the reference rate TCGKing used. The set is planned to include foil-stamped autograph cards from the anime's voice cast.

What the set contains

The set is based on the TV anime, and its official product page uses the code mkr-1. Each pack holds 8 cards, and a box holds 16 packs.

Product image for the Union Arena The Irregular at Magic High School booster pack
Product image for the Union Arena The Irregular at Magic High School booster pack · © Bandai

The rarity breakdown counts card types, not copies: 12 SR (Super Rare), 12 R (Rare), 28 U (Uncommon), 28 C (Common), and 12 AP (Action Point). The set also includes parallel cards, which are inserted at random.

Many of the illustrations were newly drawn for this product. The characters in the lineup are Tatsuya Shiba, Miyuki Shiba, Shizuku Kitayama, Mayumi Saegusa, Erika Chiba, Mizuki Shibata, Honoka Mitsui, Mari Watanabe, and Azusa Nakajo.

Autograph cards and the serial-numbered AP campaign

Foil-stamped autograph cards of the TV anime's voice cast are planned for the set. The announced lineup, character followed by voice actor, is:

  • Tatsuya Shiba – Yuichi Nakamura
  • Miyuki Shiba – Saori Hayami
  • Shizuku Kitayama – Yuiko Tatsumi
  • Mayumi Saegusa – Kana Hanazawa
  • Erika Chiba – Yumi Uchiyama
  • Mizuki Shibata – Satomi Sato
  • Honoka Mitsui – Sora Amamiya
  • Mari Watanabe – Marina Inoue
  • Azusa Nakajo – Saki Ogasawara

A separate "Serial No. Limited AP" campaign adds serial-numbered Action Point cards to booster packs, at an extremely low insertion rate and in limited quantity. These cards are planned to carry the cast members' handwritten autographs.

The terms are strict. Serial-numbered limited AP cards cannot be exchanged or returned for reasons such as appearance defects. Whether they will appear in reprint runs is undecided.

Where it fits in the Union Arena calendar

The format matches other recent Union Arena boosters. TCGKing's coverage of the JoJo's Bizarre Adventure booster, due February 12, 2027, describes the same 385 yen (about $2.44) price, 8-card packs, voice-cast signature cards, and serial-numbered AP campaign.

This set comes after several releases already on the calendar. Re:ZERO Vol.2 EX17BT is due October 30, followed by Monogatari Vol.2 and the D.Gray-man booster UA58BT on November 27, 2026. The Uma Musume booster and the My Hero Academia New Card Selection both land December 11.

What is still unknown

The announcement is for Japan. Release dates and pricing outside Japan are not announced yet, so no English or European release has been confirmed.

The full card list and individual card names are not announced yet. Insertion rates for the autograph cards are not announced either. Details of the serial-numbered AP campaign are to be updated at a later date, and product specifications are subject to change. Photos may differ slightly from the actual product.

What it means for players

  • Note January 29, 2027 as the Japanese release date. Nothing has been announced for English-language or European markets.
  • The pack price of 385 yen works out to about $2.44. That is an approximate conversion, and local retail prices in Europe and Switzerland are set by distributors and usually differ.
  • Anyone who collects the autograph cards can already see which nine voice actors are planned. Pull rates are not yet published.
  • Chasing the serial-numbered AP cards means accepting that they cannot be returned or exchanged over appearance defects.

Written with the help of AI from the sources listed below, then checked automatically for accuracy and originality under TCGKing's editorial responsibility. Methodology →

Sources

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