Union Arena Demon Slayer Deck Guide: Yellow Tanjiro 2026

TL;DR: Tanjiro Kamado (UE05BT/KMY-1-008, 4-cost, 4000 BP) fetches a cheap Nezuko Kamado from your sideline to hand on When Played, then lets you play a second matching Nezuko straight onto your field. Nezuko Kamado (UE05BT/KMY-1-011, 3-cost, 3500+ BP) gains 500 BP during your turn whenever Tanjiro is on the field, and her When Attacking ability swaps Tanjiro's front-line position with a different character on your energy line. UE05BT released January 2025 and has no headline regional result logged yet.

What does the Union Arena Demon Slayer deck actually do? (quick answer)

Play Tanjiro Kamado, use his When Played ability to fetch and deploy Nezuko Kamado in the same turn, then let Nezuko's passive BP boost and repositioning ability do the rest of the work. It's a two-card core that turns one strong play into two bodies on the field almost immediately, backed by a real BP payoff for keeping both siblings on the field together.

Overview: Tanjiro's Nezuko tutor engine

Tanjiro Kamado (UE05BT/KMY-1-008, SR) is a 4-cost Yellow Character with 4000 BP and Impact, meaning a won battle deals 1 direct damage to the opponent on top of the combat result. That alone makes him a reasonable body to commit energy to, but his real value sits in his When Played ability.

On entry, Tanjiro lets you add up to one Nezuko Kamado card with 3 or less required energy and 1 AP cost from your sideline to your hand, then separately lets you play up to one Nezuko Kamado card matching that same cost restriction from your hand directly onto your field, resting. Read that carefully: it's two separate effects bundled into one When Played trigger, a fetch and a deploy, both gated by the same cheap-Nezuko cost check.

Tanjiro's When Played ability does two things at once: pull a cheap Nezuko to hand, then set a matching Nezuko onto the field resting.

GODEEPER: Want the full picture of how Raid and combat interact across every Union Arena color? The mechanic explainer breaks down the trigger types this deck relies on. Union Arena Raid Mechanic Explained: Transform Your Cards →

Nezuko Kamado: the BP payoff and battlefield swap

Nezuko Kamado (UE05BT/KMY-1-011, SR) is a 3-cost Yellow Character with a 3500+ BP baseline that scales with the board state rather than staying fixed. Her During Your Turn ability grants a flat 500 BP bonus whenever Tanjiro Kamado is anywhere on your field, pushing her to 4000+ BP for as long as the two siblings share the board.

Her second ability changes how the deck actually plays out combat. When Attacking, you may choose one Tanjiro Kamado on your front line and one other character on your energy line, then swap their positions. That's real tactical flexibility: it lets you pull Tanjiro out of harm's way after he's already dealt his Impact damage, or push a fresher body to the front line without spending a card or a turn cycle to do it.

Nezuko's During Your Turn ability adds 500 BP with Tanjiro present, and her When Attacking swap repositions the board without spending a card.

Step-by-Step: piloting Yellow Demon Slayer

1. Play Tanjiro before Nezuko whenever the energy allows it. His When Played ability is what actually assembles the board, fetching and deploying Nezuko in a single turn is the entire point of running the pair together.

2. Confirm the Nezuko you're fetching actually costs 3 or less required energy and 1 AP. Not every Nezuko print in the set necessarily clears that bar, so check the specific card before assuming Tanjiro's ability applies to it.

3. Keep Tanjiro on the field for Nezuko's BP bonus, don't rush him into a trade you don't need. The 500 BP boost only applies while he's actually present, so an early, unnecessary attack that gets him removed costs you ongoing value, not just the one card.

4. Use the When Attacking swap reactively, not on autopilot. Save it for turns where repositioning genuinely changes the combat math, either protecting Tanjiro after his Impact trigger or bringing a healthier body to the front line.

Tips

Sequence Tanjiro's fetch target with your actual hand in mind. If you're already holding a cheap Nezuko, there's little reason to fetch a second copy from the sideline that turn, the deploy half of his ability is usually the more valuable of the two options when your hand is already stocked.

Community coverage of Union Arena's earlier 2025 single-IP waves has generally treated Demon Slayer as a playable but unheadlined archetype, useful context if you're weighing it against newer franchises with fresher regional buzz rather than expecting tournament hype out of it.

That earlier release window matters for the secondary market too. UE05BT has had well over a year to settle in price compared to a set still working through launch week, so singles for Tanjiro and Nezuko tend to track closer to their real demand than a hyped new release still inflated by opening-week scarcity.

If you're building past the two-card core, prioritize additional Yellow characters that can profitably occupy the energy line Nezuko's swap targets, since her repositioning ability is only as useful as the second body you're actually swapping in.

Don't sleep on running Tanjiro purely for his stats if the tutor line isn't live yet in a given game. A 4-cost, 4000 BP body with Impact is a fine standalone play even before Nezuko shows up, which gives the deck a reasonable floor on turns where the full combo hasn't assembled.

Where Demon Slayer actually stands right now

Union Arena's official top-placing decks archive doesn't currently list a headline recent regional result for Yellow Tanjiro the way it does for several newer archetypes. That's consistent with UE05BT's status as an earlier-wave 2025 set rather than evidence it's unplayable, older single-IP card pools naturally cycle out of recent tracked results even while individual cards like Tanjiro and Nezuko remain genuinely strong on rate.

GODEEPER: Curious how the rest of the current Union Arena field is doing by comparison? Union Arena Current Meta: Which Deck Is Strongest Right Now →

Key Takeaways

• Tanjiro Kamado (UE05BT/KMY-1-008, SR, Yellow, 4-cost, 4000 BP, Impact) fetches and deploys a cheap Nezuko Kamado on When Played
• Nezuko Kamado (UE05BT/KMY-1-011, SR, Yellow, 3-cost, 3500+ BP) gains 500 BP during your turn with Tanjiro on the field
• Nezuko's When Attacking ability swaps Tanjiro's front-line position with another character on your energy line
• UE05BT, Demon Slayer: Kimetsu no Yaiba, released January 2025
• No headline recent regional result is logged for this archetype, consistent with its earlier release window

Frequently Asked Questions

Is Yellow Tanjiro a good deck in Union Arena? It runs on a real tutor-and-swap engine between Tanjiro Kamado and Nezuko Kamado, both confirmed via official card text, though Union Arena's top-placing decks archive doesn't currently list a headline regional result for it, so treat the deck as untested competitively rather than proven.

What does the Tanjiro Kamado SR card actually do? Tanjiro Kamado (UE05BT/KMY-1-008, SR, 4-cost, 4000 BP) is a Character with Impact and a When Played ability that fetches a Nezuko Kamado card costing 3 or less required energy and 1 AP from your sideline to hand, then lets you play another matching Nezuko from hand directly onto your field resting.

What is Nezuko's role in the deck? Nezuko Kamado (UE05BT/KMY-1-011, SR, 3-cost, 3500+ BP) gains 500 BP during your turn whenever Tanjiro is on your field, and her When Attacking ability lets you swap Tanjiro on the front line with a different character on your energy line.

When did the Demon Slayer set release for Union Arena? UE05BT, Demon Slayer: Kimetsu no Yaiba, released in January 2025, an earlier-wave EN set that predates several of Union Arena's newer single-IP releases.

Is this a good deck for new Union Arena players? Reasonably so. The core loop of playing Tanjiro into a fetched Nezuko is simple to execute even without perfect sequencing, and both cards are Yellow, so there's no cross-color AP juggling to learn on top of the basic rules.

Related Reading

• Union Arena Hunter x Hunter Deck Guide: Blue Gon 2026: Another earlier-wave single-IP archetype built around a specific character combo.
• Union Arena Card Rarities Explained: Every Tier in 2026: What SR rarity actually means for cards like Tanjiro's and Nezuko's prints.
• Union Arena TCG Beginner Guide: How to Start (2026): The front line, energy line, and When Played basics behind every card in this guide.
• Union Arena Deck Building Guide: Build a 50-Card Deck: The construction rules to apply once you're building beyond the two-card core.

References

• UNION ARENA BOOSTER PACK Demon Slayer: Kimetsu no Yaiba official product page: Bandai's official set listing and release date
• UNION ARENA Card List, official card database: Source for Tanjiro Kamado's and Nezuko Kamado's verified card text used in this guide
• TCGPlayer Union Arena: Demon Slayer: Card pricing reference