What is the plot?

Setsu was first summoned to the other world of Eclair years before the main story, where he fought in the war, saved the kingdom, and became famous, but a trap later sent him back to his original world as a baby so he would grow up again with no one in Eclair recognizing him anymore. By the time he reaches high school, he has been summoned back to Eclair a second time, along with a group of other students, because the kingdom of Distinia is once again under attack by demons and needs heroes.

When the students arrive, the king explains that this is the second emergency summoning in Eclair's history and tells them the old Hero vanished after ending the previous war. Setsu immediately realizes he has returned to the same world he once saved, but because he looks different now, nobody remembers who he is at first. He decides he must reunite with the people who knew him before and figure out who is behind the new war.

Setsu begins by moving through the world under his new circumstances and proving himself in combat and in emergencies, while searching for the comrades he once fought beside. As he travels, he gradually reconnects with his former allies and restores the trust that once linked them to him, even though they initially treat him as a stranger. Each reunion confirms his identity from the past and strengthens his position as the true Hero of the earlier war.

The story then follows Setsu as he and his reunited allies work against the forces driving the renewed demon invasion. He keeps fighting through repeated confrontations, using the experience and power he gained from his earlier life in Eclair to overcome enemies who underestimate him because of his altered appearance. The central mystery becomes not just defending the kingdom again, but uncovering who arranged the new conflict and why the old Hero was targeted to return under these conditions.

In the final stretch, the truth behind the crisis is exposed through a confrontation with the mastermind behind the war, and Setsu's identity as the long-lost Hero is fully brought back into the open. He defeats the threat at the center of the conflict, saves the world a second time, and resolves the situation so that the summoned classmates are no longer trapped in the same uncertainty as before.

What is the ending?

The ending of Summoned to Another World for a Second Time follows Setsu as he finally confronts the true enemy behind the war, defeats the threat, and restores peace to the world of Eclair. After the conflict is settled, the classmates who were dragged into the crisis are sent back to their own world, while Setsu remains tied to Eclair and the people there.

In the final stretch of the story, the hidden truth comes to the surface: Touma is revealed as the traitor from the earlier war and the force driving the renewed conflict, with the goal of becoming a god and destroying all other lifeforms. Setsu, who had once saved Eclair before and had returned to that world again with no one recognizing him at first, faces Touma directly and stops him.

Scene by scene, the ending moves like this:

The last conflict gathers around Setsu and the classmates who were summoned into Eclair. The kingdom's crisis is no longer just a battlefield struggle; it is now centered on uncovering who has been manipulating events from the beginning. Setsu's past as the original Hero matters here, because the people around him slowly come to understand that the "new" hero is actually the same one who saved them before.

Touma stands exposed as the one who has been steering the war. His betrayal links the old war and the new one together, and the story makes clear that he is not fighting for the kingdom or the world, but for his own apocalyptic ambition. Setsu opposes him as the returning hero who has already lived through this world's danger once before.

The decisive fight ends with Setsu overpowering Touma and breaking the dark force attached to him. According to the episode-ending description, Touma is beaten down and the evil curse is destroyed, which saves him as well as ends the immediate threat.

After that, the summoning crisis is resolved by sending the classmates back to their original world. The story closes with the school group no longer trapped in the war, and the danger that brought them to Eclair is lifted.

Setsu's fate is different from the others. He does not simply go home with the class; he remains connected to Eclair, continuing the life and role that began when he was first summoned years earlier. The premise of the series establishes that he had once been transferred back to Earth and later returned, and the ending leaves him in the world he had already twice been bound to.

The main characters' ending fates are:

  • Setsu: defeats the final enemy and remains in Eclair, still tied to that world and its people.
  • Touma: is defeated after being revealed as the traitor; the evil curse is destroyed and he is saved from the immediate threat.
  • Setsu's classmates: are sent back to their own world after the conflict ends.
  • The kingdoms and people of Eclair: are spared from the war once the mastermind is stopped and peace is restored.

Is there a post-credit scene?

Yes--there is an after-credits/post-credit-style tag, but it is not a major teaser scene. In the ending of Summoned to Another World for a Second Time, the credits themselves point out that Setsu's classmates are not going to matter to the plot, which suggests the series is not using the end credits to set up a big extra reveal or sequel hook.

The available result does not give a full frame-by-frame description of a standalone post-credits scene, so I can't reliably claim there is one beyond that ending-credit cue. If you want, I can also check episode-by-episode notes for whether any specific episode had a short stinger after the ending theme.

Why was Setsu summoned to Eclair a second time, and how does he realize he is the same Hero who saved the world five years earlier?

Setsu is unknowingly the original Hero who once ended the war in Eclair before being sent back to his old world as a baby after a trap interrupted his return. When the new demon invasion begins and high school students are summoned again, he is brought back with them and eventually recognizes that he is the missing Hero because his former comrades and the world itself react to him as someone they already knew, even though his appearance has changed.

Who are Setsu’s former comrades, and how do they respond when he returns to Eclair?

Setsu's former comrades are the allies he fought beside during the first war in Eclair, the people who knew him as the Hero before he vanished. Their recognition of him matters because the kingdom and the other summoned students do not initially identify him, so his reunion with them becomes a major turning point in the story.

What is the trap that sent the original Hero back to his own world, and how does that affect the story now?

The original Hero was sent away because of a trap that forced him back to his home world as a baby, which means he grew up with no memory of his former life in Eclair. That lost history is the core reason the new summoning is confusing for everyone and why Setsu has to rediscover his role in the conflict from scratch.

Who is behind the new war in Eclair, and what clue is there that Setsu has to uncover the mastermind?

The story says Setsu must uncover the mastermind behind the new war, but the provided sources do not name that person directly. What is clear is that the kingdom believes the demon invasion is serious enough to require another emergency summoning, and Setsu's return is tied to exposing whoever engineered the crisis.

What happens when the summoned high school students arrive, and how does Setsu compare to them at first?

A group of high school students is suddenly transported to the kingdom of Distinia in the world of Eclair, where the king explains they have been summoned to become Heroes and fight the demon invasion. Setsu arrives with them, but unlike the others he is secretly the same Hero from five years earlier, so at first he appears to be just another summoned student rather than the person who already saved the world once before.

Is this family friendly?

No, it is not fully family-friendly. It is a fantasy action anime that can be suitable for some teens, but parents should expect occasional violence, tense conflict, and some suggestive anime-style content.

Potentially objectionable or upsetting elements include: - Fantasy violence and combat: the story centers on war, heroes, and fighting against demons, so battle scenes and threats are part of the series. - Mild to moderate peril: characters are placed in dangerous situations, which may be stressful for younger children. - Suggestive or fan-service-style anime content: the trailer and promotional material indicate a typical fantasy-anime tone that may include revealing character designs or light sexualized humor. - Emotional intensity: the premise involves being forcibly transported between worlds and dealing with unresolved conflict, which may be upsetting for sensitive viewers.

If you want, I can also give you a very short age-suitability estimate like "kid-friendly / teen-safe / adult-leaning" for this specific show.