Undead Unluck: Winter-hen

Amidst a blizzard caused by UMA Winter, Billy receives a report on the Autumn battle and learns Undead and Unluck are evolving. Juiz appears, revealing to him that the artifacts are weapons meant to defeat God and that the Ark can only perform one more loop. She urges Billy to join forces once more and stake everything on Unluck to achieve their shared goal: "defeat God." However, Billy declares that they cannot work together. Juiz realizes Billy's true intention—to obtain Ark and Apocalypse—but before she can act, Billy drags them into a brutal clash involving UMAs on both sides. Resolute in their own "justice," Juiz presses forward with her blade, while Billy counters by utilizing other Negators' abilities and his pistol. What is Billy's true objective? Meanwhile, Andy and Fuko, having captured Autumn's core, are en route by air to take down Summer. But Billy anticipates that Juiz entrusted Apocalypse to Andy, and sends assassins to strike the pair from the skies!

(Source: TMS, edited)

Izumo, Fuuko Main

Kahara, Moe Japanese

Andy Main

Nakamura, Yuuichi Japanese

Xiang, Shen Supporting

Hanae, Natsuki Japanese

Tristan, Rip Supporting

Kaji, Yuuki Japanese

Vorgeil, Nico Supporting

Yusa, Kouji Japanese

Alfred, Billy Supporting

Koyama, Rikiya Japanese

Tatiana Supporting

Kugimiya, Rie Japanese

Juiz Supporting

Ise, Mariya Japanese

Kowloon, Feng Supporting

Morikawa, Toshiyuki Japanese

Bull Sparx, Top Supporting

Okamoto, Nobuhiko Japanese

Park, Seong-Hu Director, Episode Director, Storyboard

Aketagawa, Jin Sound Director

Ziyoou-vachi Theme Song Performance

Suehiro, Kenichiro Music

Reviews

Jan 1, 2026

veldora__kun

Recommended

Alright!! Let’s first talk about recap, isn’t this how a recap should be done? I really liked how they explained 24eps in 7min. It really helps the viewer to pick on some things or brush up some things. Before watching this I had watched a 17min recap on YT which has around 990 views and was uploaded one one year back and instead of catching up I got confused but this 7 min recap made it very clear and made me catch up very easily with season 1. Every anime should try this template for their new seasons. 10/10

On MAL I saw the studio change ... from David Production to E&H and I was skeptical about it never heard and watched any anime from E&H so I thought they will mess this up big time but no rather it had better animation, fight choreography—camera angles and the overall direction was very good and It felt complete. Not sure how well they adapted this from the manga, but as an anime only I did not fill anything was left out or they skipped something. Sure there questions like why Tella couldn’t speak or is Belly on Union’s side??

A very well done special episode, I remember when s1 ended everyone was going bonkers on how this special is going to be a treat to watch and they did not disappoint.

Apparently this new E&H studio is newly opened by Seong-hu Park who has previously worked on jjk s1, and we could already see what he brings in with the special episode. I don’t mind if they continue with E&H with Seong-hu as a director and storyboard artist for season 2.

CANT WAIT FOR S2 NOW!!! HOPE IT IS AS GOOD AS THIS SPECIAL AND SEASON 1.

And one more thing why is this rated under 8?? It should at least be 8.

Reviewer’s Rating: 9

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Dec 29, 2025

DanteDemonZ

Recommended

Undead Unluck: Winter Arc is a surprisingly brutal return to the series that immediately establishes a far darker tone than much of what came before. The opening is relentless, depicting the slaughter of wounded soldiers in medical tents with none of the comedic undertones Undead Unluck occasionally leans on. This grim introduction is elevated by immaculate art direction, with sharp flashes of colour during gunfights that abruptly cut to quiet, sombre imagery, such as a lone survivor standing in a rain-soaked graveyard. It is a striking visual storytelling that effectively sets the stage for Billy’s importance in this arc.

Despite that harsh opening, Winter Arc never ... loses its identity. Once the setup is complete, it settles back into the Undead Unluck fans know and love, embracing its shounen roots through larger-than-life confrontations and explosive momentum. The special becomes a high-octane spectacle, anchored by a beautifully choreographed and animated clash between Billy and Juiz that serves as its emotional and thematic centrepiece. Beyond the backstory, it functions as a pure action showcase, feeling akin to Dragon Ball Super: Broly but tailored specifically for Undead Unluck fans. The pacing is relentless, the action consistently engaging, and the experience remains enjoyable from start to finish. It is a genuine shame this was released digitally, as this bold, visually impressive special truly deserved to be seen on the big screen.

Reviewer’s Rating: 8

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Dec 30, 2025

RussianPolyglot

Recommended

Spoiler

Undead Unluck — Winter Arc

The series pivots itself through its distinguishable highly unique character designs, each imbued with a distinct cohesive visual technique. Yet this strength is intermittently compromised by inconsistencies in draftsmanship, resulting in moments where characters lose structural fidelity and visual cohesion.

From an animation standpoint, the work demonstrates flashes of intermediate excellence. The Joyce–Billy confrontation stands as a clear highlight, marked by fluid motion, deliberate choreography, and a commendable sense of kinetic weight. Conversely, the decision to abandon Spoils’ established two-dimensional aesthetic in favor of a three-dimensional model proves visually discordant, disrupting stylistic continuity and ultimately a repugnant downgrade. That said, Spoils ... beam attacks are executed with notable precision and visual elegance, offering moments of striking spectacle. Similarly, Andy’s engagement with Umabalance is competently animated, maintaining clarity and momentum throughout.

The CST merits specific recognition. Rather than merely reiterating a functional motif from Season One, it is presented here with a renewed sense of identity, feeling fresh, distinctive, and conceptually purposeful. This refinement lends the arc a subtle but meaningful tonal distinction, reinforcing its role as more than a simple continuation.

Whether regarded as a feature, a special, or an extended episode, this installment functions effectively as a transitional work, prioritizing narrative positioning over immediate resolution. Its principal value lies not in culmination, but in foundation, clearly orienting the series toward the developments to come.

In light of this proximity to continuation, I am withholding a comprehensive assessment of Season One. With the subsequent arc imminent, a unified evaluation will allow for a more judicious and holistic appraisal of the series’ intent and execution.

Reviewer’s Rating: 8

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