PLAY'S · EVENT · 21 OCT 2026

The seventh collaboration opens on 22 October, and took seven days to be documented

The seventh にじさんじ collaboration was announced in a live broadcast on 12 October. The official notice went up on 19 October — seven days later, three days before it opens. Until then the date, the cards, the skins and the theme song existed only as posts on X. This is what the notice says, what the posts said before it, and which parts are still undocumented the day before launch.

The dates

All four from the official notice. The Legend Battle ends on 25 November at 23:59 and the shop closes at the maintenance on the 26th, so about ten hours apart rather than the full day the dates suggest.

What is in the shop

The event is 「仮想の決闘者 第7弾」 — roughly Virtual Duelist, seventh, translated here rather than official — and the deck-builder line carries the same name. The official pages write it with 第7弾; the daily card-list posts on X write 『コラボデッキビルダー 仮想の決闘者』 without it.

Four things go on sale: the Collab Set, the deck builders, a playmat and a protect. Two of them have published contents.

The Collab Set — コラボセット, the name the August collaboration used too — is five DMPP-37 packs, one collaboration prize card of SR or above, and one skin chip. DMPP-37 is the current set, so this is the live pack rather than an older one.

The deck builders are 36 cards each and there are five of them, each carrying one type of collaboration prize card. The notice gives the count as five and does not tie them to particular livers; the daily card-list posts do, one per liver. The publisher described them on 12 October as suited to beginners and as carrying prize cards that go well with the Collab Set. It did not say how, and the notice does not either.

Prices are not published. Neither is the card list of any deck builder beyond the images posted daily on X, which are too small to read.

The five, and their cards

One liver a day from 15 to 19 October, each with a skin and two prize cards. The product code is printed on the box in each day's card-list image; three of the five are legible at that size.

Codes are read off the product box in the card-list images, which are 680 pixels wide. Two of the five do not resolve at that size and are not guessed here. The codes do not run in reveal order. For comparison, the Railgun collaboration in August ran DMPC-11 to DMPC-13 across three products.

Two differences in how the five were handled are worth recording because they are visible in the posts rather than stated anywhere. リゼ・ヘルエスタ's skin is a 皇族衣装 variant rather than her default look. And 栞葉るり, the last of the five, had both her prize cards announced in a single post where the other four got one post each — her card-list post also carries the line 「※商品パッケージに関して、一部変更がございました。」, a change to the product packaging, with no further detail.

The Legend Battle

All five livers appear in it. Legend Points pay out special-illustration cards, protects and titles, and the story mode is given a collaboration treatment. It runs from the 22nd to 25 November 23:59.

Reward tiers are not published. The notice points at a further notice that does not exist yet. The current Legend Battle, 「深淵より時を歪めて」, ends at 23:59 on 21 October, and the new one starts after a maintenance that runs to 15:00 on the 22nd — so there is a gap of about fifteen hours between them, not a clean handover.

Seven days of nothing

The collaboration was announced on 12 October during a live broadcast, in nine posts over sixteen minutes. The first page on the publisher's news index appeared on 19 October.

That gap is unusual for this publisher rather than normal. The Railgun collaboration was revealed on 23 August and documented on 25 August, two days later, and ended up with four notices. This one ran a week on X alone, and in that week the publisher posted the opening date, five skins, ten prize cards, a theme song with full credits, and the fact that the sixth collaboration's skins and cards return — none of it on a page that could be cited.

It is worth being plain about what that does and does not mean. It is a documentation lag, not a sign of anything wrong with the collaboration. The streamer event that ran on 12 October — the same broadcast this collaboration was announced in — still has no page on the news index eight days later, so a documented event is not guaranteed at all. What it changes is what a reader outside Japan could find: for seven days, the answer was nothing, unless they were watching the X account.

What is still not known the day before

• Three promised notices — the set, the deck builders and the Legend Battle. None had appeared by 18:00 on 20 October.
• Prices for any of the four shop items.
• Card lists for the deck builders, beyond images too small to read.
• Legend Battle reward tiers.
• What the packaging change was, noted on 19 October without detail.
• Two client features announced on 12 October as due this month: 『デュエプレ・レッスン』, a mode that teaches a topic through play, and 『ランダムスキン機能』, which picks a favourited skin per match. The Ver.4.8.1 maintenance notice for the 22nd does not list either of them in its published contents.

The same maintenance changes the Quick Pick card pool from eleven products to fourteen, adding DMPP-33 through 35 mid-season.