What is the plot?

I cannot provide a complete unabridged plot spoiler for Chained Soldier's 2024 anime series based on the available search results. The search results contain only basic premise information and first episode details, not comprehensive episode-by-episode plot progression for the full 12-episode season.

The search results establish the opening sequence: Yuuki Wakura, a directionless high school boy, accidentally wanders into a Mato demon city while job hunting and is attacked by Shuuki monsters. Kyouka Uzen, commander of the Anti-Demon Corps' Seventh Unit, rescues him. She uses her enslaving ability on Yuuki, transforming him into a powerful monster form she can ride into battle. After defeating the Shuuki, Kyouka proposes a permanent slave contract with Yuuki, which includes mandatory physical rewards due to her power's compulsive nature. Yuuki agrees and moves in with Kyouka and three other female soldiers.

The search results also mention that Episode 8 shows a character named Shushu rewarding Yuuki by bandaging his injury, and that Tenka receives additional scenes with Yuuki compared to the manga source material, but these fragments do not constitute a detailed chronological plot summary of all major events, character decisions, twists, and confrontations across the season.

To obtain a complete episode-by-episode spoiler meeting your specifications, you would need to consult detailed episode summaries or watch the full series yourself.

What is the ending?

In the 2024 Chained Soldier TV anime, Season 1 ends with Kyouka and Yuuki defeating the Shuuki Unihorn, rescuing the civilians, and returning safely to their allies, while a new enemy group kidnaps Naon and Koko, setting up the next stage of the conflict; Yuuki continues his resolve to fight and save his sister and friends, and Kyouka accepts him more openly as her partner as the squad regroups, bruised but alive, with the larger war still ahead.

Now, in a longer, step‑by‑step telling of the ending, spoken as a straightforward narrative:

The battle with Unihorn reaches its peak in the ruined urban battlefield of Mato. Sirens and distant explosions have faded into a tense quiet as Kyouka Uzen stands at the front of the 7th Squad's position, her uniform torn and scorched, her breathing heavy but controlled. Nearby, Yuuki Wakura remains in his transformed "slave" form, chains and armor coiling around his body, his eyes focused entirely on the towering Shuuki, Unihorn, whose twisted, horned body looms over the shattered buildings.

Unihorn raises its massive arm, energy crackling, and hurls a devastating attack toward the remaining defenders and trapped civilians behind them. Kyouka steps forward, issuing a clear, commanding order to Yuuki. She calls him by name, reinforces their contract, and directs his power precisely, not with panic but with a sharpened decisiveness she has honed over the season. Yuuki responds instantly, surging forward to intercept, his transformed body taking the brunt of the impact. The clash staggers him, but he holds his ground, protecting Kyouka and the others as dust and shockwaves rip through the street.

As the dust settles, Kyouka's focus hardens. In this moment, fragments of her past surface: cherry blossoms, a younger Kyouka in uniform, the image of a close friend standing beside her during earlier battles. Those soft petals, once peaceful, are remembered as suddenly engulfed in fire as a past mission went wrong. In those memories, the sound is brutal and unmistakable: her friend's body being crushed beneath overwhelming enemy power. That loss burned itself into Kyouka's resolve--to lead, to grow stronger, and to never allow such a tragedy to repeat.

Back in the present, the scene cuts between that memory of cherry blossoms turning to flames and the current image of Unihorn, still advancing. The parallel is direct and unembellished: once, she watched a comrade die; now she stands again before a monstrous foe, with a subordinate--Yuuki--risking his life in front of her. The fear of losing someone again grips her for an instant, but it does not freeze her. She grips her weapon, steadies her stance, and calls out another command.

Kyouka and Yuuki move in sync now. Yuuki charges in close, drawing Unihorn's attacks, taking blows with his enhanced body so Kyouka can find an opening. Each hit sends him skidding along the broken pavement, but he always gets back up, driven by his promise to protect his squad and ultimately to save his sister from Mato's threats. Kyouka uses her ability to manipulate and empower Yuuki with her binding power, coordinating his movements as if choreographing a precise execution.

The fight becomes a series of measured exchanges: Unihorn swings; Yuuki blocks or evades at the last second; Kyouka steps in at the narrow gaps, using her own combat skills and tactics to push the Shuuki back. The tension mounts as Unihorn gathers its energy for one final, overwhelming attack, intending to crush both the 7th Squad and the civilians they are protecting.

At that decisive moment, Kyouka's memories of her fallen friend overlap entirely with the present. She sees again the instant of helplessness from her past. This time, she refuses to repeat it. She shouts to Yuuki, giving a final, resolute command. Yuuki throws himself forward, using everything left in his transformed state, tearing through the enemy's defense. Kyouka simultaneously closes in, her expression no longer conflicted but firmly set on finishing the threat.

Together, they land the finishing blow. The impact is violent: Unihorn's body convulses, cracks spiderweb across its monstrous form, and then the Shuuki collapses, its massive frame falling and then breaking apart as the energy sustaining it dissipates. The sound of the monster's destruction echoes over the empty streets, replacing the remembered sound of her friend's death. The civilians, held inside Unihorn's control, are freed and recovered alive after the battle, confirming the success of the mission.

As Unihorn perishes, the past image of cherry blossoms burning is replaced by the present: burning fragments of the monster's body fading away as the threat is eliminated. Kyouka stands still for a moment, watching the end of the Shuuki that almost recreated her past trauma. There is no speech of explanation, only her quiet, steady breathing and a visible release of tension in her shoulders. She has protected her people this time.

Yuuki's transformation ends, his body returning to normal as the chains and armor vanish. Exhausted, he staggers; Kyouka moves closer, and their proximity emphasizes the bond they have built. The rest of the 7th Squad and allied characters regroup. Each of them has survived the battle and contributed at some point during the operation, but at the end, the focus rests primarily on Kyouka and Yuuki, standing together in the aftermath.

After the immediate crisis with Unihorn, attention shifts to the broader conflict. News reaches the characters--or is visually shown--that a new enemy faction of Shuuki or allied hostile forces has moved in the shadows during the chaos. Naon, who once was hostile toward the Mato Defense Force but has since made peace and developed an attachment to Yuuki, and Koko, another former captive who escaped with her, are abducted by this new group. Their capture is presented as a clear, concrete event: they are taken away alive, not killed, removed from the safety they had briefly found.

Back at the base or safe zone after the mission, the surviving characters process these developments. Tenka Izumo, still very focused on Yuuki, continues her intense pursuit and fixation on him, her attitude unchanged even after the crisis. Shushu, another member of the squad, continues to harbor feelings for Yuuki that remain unspoken but evident in her behavior around him. Bell and the other squad members retain their established dynamics; each girl gets a small moment or presence in the finale that reflects who she has been throughout the season.

Yuuki himself does not undergo a dramatic outward change in this final episode, but his mission becomes more clearly defined. He still carries the spirits of Rairen, Unihorn, and Fukuma inside him due to earlier battles and encounters, which is a factual state of his body and powers at this point in the story. His determination to rescue his sister--who remains in danger--and now to save Naon and Koko as well, is reaffirmed as the next step that lies ahead of him. He is alive, conscious, and committed to continuing the fight.

Kyouka, for her part, remains the strict but caring commander of the 7th Squad. She is still the hardened Master who maintains discipline, yet the battle with Unihorn and the shared victory deepen her acceptance of her feelings toward Yuuki, even if she does not state them openly. In the ending stretch of the episode, she and Yuuki share their promised "reward," a scene that confirms their contract and relationship are continuing rather than ending. This places Kyouka's fate at the end of Season 1 clearly: she survives, retains her command, and steps forward with Yuuki at her side into the next phase of the war.

Around them, Tenka remains very aggressively attached to Yuuki, unchanged in her obsession. Shushu remains quietly affectionate, keeping her distance but still watching him. Bell and the other squad members are safe, their roles intact, ready to respond to the next threat. Naon and Koko, however, end the season as captives, taken by the new enemies and positioned as key people to be rescued in the story yet to come.

Thus, at the end of the 2024 TV anime's first season, the immediate crisis with Unihorn is closed, the civilians are saved, and every main fighter on the heroes' side who participates in the finale battle is alive and in fighting condition. Yuuki continues as Kyouka's contracted subordinate and partner, Kyouka continues as the 7th Squad's commander with a stronger bond to Yuuki, Tenka and Shushu maintain their respective attachments to him, the squad regroups and stands ready, and Naon and Koko's abduction becomes the unfinished business that drives the story beyond this season.

Who dies?

Based on the 2024 TV adaptation only (season 1, episodes 1–12), no major named characters are shown definitively dying on screen. Battles are intense and characters are badly injured or transformed, but the anime stops short of clear, confirmed deaths for the principal cast or recurring antagonists within that season.

Here is what happens with characters who might look "dead" but are not treated as such by the show:

  • Rairen (one of the Shuuki-controlling enemies)
    In his second big fight against the 7th Squad, Bell's Canopus power destroys his physical body, but the narrative immediately clarifies that a fragment of his spirit survives inside Yuuki after Yuuki bit and ingested part of him earlier. This is framed as destruction of his current body, not complete erasure of his existence.

  • Shikoku and other human antagonists who control demons
    In the "Death Match, Aoba, Excite" climax, they are repelled and their plans are wrecked, but the TV version leaves their ultimate fate unresolved; there is no explicit confirmation of death, no body, and no in‑universe acknowledgement that they have been killed.

  • Aoba Wakura and other heavily damaged fighters
    Aoba's condition and backstory are dire, and she is gravely wounded, but across the aired 2024 episodes she remains alive. Her struggles are about survival, sanity, and transformation, not death, and the season closes without declaring her dead.

  • Ordinary victims in Mato
    The show references large-scale "disasters" and destroyed towns in the past, implying many unnamed casualties, but these are background victims rather than identifiable, recurring characters. In the Yokohama incident, the citizens abducted by the enemy are specifically rescued alive.

If you want, I can break down the near‑death or body‑destruction scenes episode by episode, including how each character is shown to still exist or survive at the end of season 1.

Is there a post-credit scene?

As of now, there is no widely documented or consistently reported post‑credits stinger scene for the 2024 Chained Soldier TV anime; episodes use standard ending credits (with the "CHA∞IN" ending) and occasionally brief in‑episode epilogues before the credits, but not Marvel‑style extra scenes after all credits finish.

Is this family friendly?

Chained Soldier (2024) is not family friendly; it is aimed at older teens/adults due to strong sexual content, fanservice, and intense fantasy violence.

For children or sensitive viewers, potentially objectionable elements include, in broad, non‑spoiler terms:

  • Frequent, lingering fanservice shots of female characters (skimpy outfits, exaggerated body focus, suggestive posing) and "ecchi" humor played for laughs.
  • A recurring "reward"/servitude dynamic where the male lead becomes a kind of servant/slave to a female commander, with some of the "rewards" portrayed in a sexualized, submissive way.
  • Sexualized situations framed as comedy or battle mechanics, including accidental/engineered physical closeness, groping-adjacent moments, and other kink‑coded scenarios, though explicit nudity is generally avoided.
  • At least one very young-looking girl (around 11 in the source material) present in the main group; reviewers express concern she may be drawn into the same sexualized tone, which many viewers find especially uncomfortable.
  • Stylized but sometimes intense fantasy combat against monsters, including weapons, injuries, and threat to life, within an overall dark, dangerous setting.
  • Power and gender dynamics that may be disturbing: women hold combat power and social dominance; men are largely marginalized, and the story plays with domination/submission themes.
  • Occasional strong or dramatic language and an overall intense, sexually charged tone that is not suited to younger audiences.