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According to Shiori, Shouta-kun’s ultimate technique physically annihilates all particles and energy.

To begin with, the essence of Shouta-kun’s ability lies in slowing molecular motion. Heat is the magnitude of molecular motion, so when molecular motion decreases, things cool down. That’s why freezing occurs.
Likewise, if molecules do not move—or move very slowly—it also means they are less susceptible to change from external impact or pressure. As a result, anything within the effective range of his ability inevitably gains strength and durability.

Shouta-kun was able to cool objects to temperatures close to absolute zero. However, absolute zero is said to be a temperature that cannot physically exist. So while something can approach absolute zero infinitely closely, it can never actually reach it. That was the limit of Shouta-kun’s power.
But the ultimate technique surpasses that limit.

Shouta-kun’s ultimate technique perfectly stops particle motion.
It halts even zero-point vibration, causing phenomena that contradict the uncertainty principle and the third law of thermodynamics.
Since phenomena that are physically impossible cannot exist, they cease to exist. In other words, they are annihilated without a trace.

Apparently.

Shiori tried very hard to explain it by bringing up complicated physical theories like superstring theory, but unfortunately it was far beyond what my brain could process.
Psychic power is an unknown force that surpasses existing physics, and after ignoring physics so thoroughly up to now, it feels strange to suddenly be bound by it. But according to Shiori, no matter how unknown an energy or substance may be, its existence and behavior can always be explained through particles and vibration. And if it consists of particles and vibrates, then annihilation by Shouta-kun’s ultimate technique is unavoidable.

In short: “Absolute zero can’t exist.” → “But it becomes absolute zero.” → “Since that’s impossible, it no longer exists.”
It’s absurd, but that’s how it works.

With Shouta-kun breaking through my psychic power head-on at the very end, the secret organization’s battle against the World Shadow came to an end. But even when battles end, life naturally goes on. After all, the true purpose of a secret organization is to vividly color the youth within a long life.

Let me talk a little about what happened afterward.

Hasumi Touka lost her psychic powers.
In exchange for no longer being able to freely wield flames, she took the lighter Shouta-kun gave her at their high school graduation and flew off to Tibet. She’s now studying Tibetan Buddhism at a university there. Whether she’ll eventually renounce the world and enter the priesthood, or live as a lay believer among ordinary people, is apparently her current dilemma—but even as she wavers, she lives her life earnestly each day.

Takahashi Shouta, who also lost his psychic powers, got a job at a local thermal power plant after graduating high school.
He dyed his hair black just for the interview, then dyed it red again after getting the offer, so right after joining the company things got extremely tense and he nearly got fired. But since he’s highly motivated and already holds the various certifications required for the job, once people got past the initial shock, the criticism eased, and he gradually gained supporters within the company. He says he plans to travel to Tibet once he’s saved up enough money.

Igbadi Sognah Muguu is still a monkey, as always. Cute.

Kumano Sakyo—Kuma-san—who had long quietly supported the activities of the secret organization Amaterasu, officially became the deputy head instructor at a martial arts dojo he was familiar with. He’s so widely sought after that he’s often invited to serve as an instructor for the security division of Kaneyama Tech, a major corporation with ever-growing achievements. He’s always been well-connected, so he’s in demand everywhere.

Lonalia Linalia Baba-nyan set out on a journey. She says she’s looking for the next Demon King and Hero.
Since she got caught up in a psychic fantasy the moment she arrived on Earth, I worry she might be under the misconception that this world is overflowing with storybook-like events. Still, she surely understands by now—and compared to five years ago, the world really has become far more interesting. It’s not impossible that a real Demon King and Hero, not a fabrication, might be born somewhere.
I’m looking forward to the results of Grandma’s travels.

Tsukimori Go also lost his psychic powers.
But after years in a wheelchair, he’s now fully healthy and whole, and what he gained outweighs what he lost.
By taking good care of the underlings and drifters under his command, he’s earned strong support, and without splitting the organization, he’s managed to hold together the Tsukimori Group—considered one of the largest yakuza organizations in Japanese history, counting even its lowest members.
Recently, their overseas trade business has begun to grow, and it seems they’ve caught the attention of Chinese authorities. There’s likely to be some trouble before long.
It is not Tsukiyomi if not noisy.

Christina Najeen moved to “Kōka no Sato Ninja Village” in Kōka City after graduating high school. Thanks to her exceptional physical abilities, deep knowledge, and appearance, she was chosen straight away—despite being a newcomer—to play the role of the “ninja show big sister.”
Rumor has it that she works in tourism during the day, and at night lives a double life searching for secret scrolls hidden in the village. Whether such suspicious things as secret scrolls really exist is doubtful. Wouldn’t it be faster to just write them herself? Chris should be more aware that she herself is already a legendary ninja.

Miyama Kyousuke self-funded and released his second original CD—and it bombed spectacularly.
He once dreamed of becoming a singer-songwriter and moved to Tokyo, went into debt to release a CD that didn’t sell at all, fell into ruin, resorted to stealing guitars, got caught, and after getting out, wandered aimlessly until Oyabun picked him up. You’d think climbing to an executive position in Japan’s largest yakuza organization might have changed him a little, but he hasn’t grown at all.
I feel like Miyama will live his whole life like this.

Grand Duchess Ermentrude Bates quickly entered into a political marriage.
After an arranged meeting with someone of a noble bloodline from some European country you might or might not have heard of, the marriage was decided almost immediately. Members of the secret organization gathered at the wedding, making it feel like a class reunion.
From appearances, the kind-looking husband seems to treat Ruu-denka less like a wife and more like a cute younger sister, and Ruu-denka herself, in turn, seems to adore her husband as though he were an older brother or older friend. Is that really okay? Well, it does suit her, in a way.
In any case, a good relationship between spouses is a good thing. If he ever thought of abusing her, espers would come swarming in droves.

Hazama Sorashige published an autobiography after the final battle. A considerable number of pages were devoted to the secret organization Amaterasu, but the self-praise and exaggeration were so excessive that the content was far removed from reality.
Despite being labeled nonfiction, the book’s contents caused a mild backlash on social media. But since he was already known as a habitual liar, once people realized “it’s the usual,” they stopped paying attention and it quietly faded away.
That said, Shige-jii has a habit of somehow turning lies into truth after the fact when they’re about to be exposed. So even an autobiography full of vanity and falsehood isn’t necessarily entirely untrue. Some things that are lies now may yet be replaced by truth in the future.
Incidentally, the part of his autobiography that got mocked the most was the line claiming he had “once saved the world.”

Hikage Mikyou entered her third year of middle school.
For a while after the final battle, she seemed spaced out, as if suffering from burnout. But after a classmate spotted her absentmindedly playing with her shadow ability and things got messy, she regained her usual energy. According to Shiori, “it smells like a romcom,” and debates among informed parties are heating up—should we intervene, if so how, and should there be a Secret Organization Season 2, and so on.
Sorry for being a bunch of bad adults who meddle in other people’s lives for fun! We won’t do anything bad, so please forgive us.

Paula Port resumed her fierce clashes with John St. Germain after his parole. It seems St. Germain is once again weaving dubious schemes, while Paula senses them and confronts him together with her hacker partner.
The grudge between the two is real. It feels like the destined rivalry of an American comic book hero and villain.
St. Germain has powers and authority that cannot be underestimated, but Paula is no slouch either. Their opposition naturally tends to become dramatic.
They might be the most fantasy-esque presence in this world.

Wang Haoran, Tai-Yi, and Huang-Hu of the Nyannyan Triad are rapidly expanding their influence on Qitaohe City of the Chinese Coastal Economic Special Zone.
Haoran-kun, who outwardly is treated as a young trade entrepreneur, has installed a well-educated, broadly appealing man as the company president, while he himself holds real power behind the scenes and maneuvers cunningly. Being skilled at misdirection and safety measures, even if he falls into danger, he’ll likely escape by using the unwitting president—who doubles as a mascot and scapegoat—as a shield.
That said, the real reason for their expansion isn’t trade—it’s cats. Cat training, hosting and dissolving cat gatherings, cat matchmaking, cat cafés where you can talk with cats, selling cat goods designed from a cat’s perspective… the cat-related businesses they supposedly dabbled in on the side have gone viral beyond belief and become something huge.
Considering that 99.9% of the Nyannyan Triad’s members are cats, perhaps this development was inevitable. With Tsukuyomi, which partners with the Triad, also eager about cat businesses, the Nyannyan Triad is sure to become even more cat-filled from here on.

Medu Sagrogo is studying at a school in her homeland of Marlstān while aiming to eventually enter the national cabinet. She’s sharp, has strong connections with the new government, and boasts real martial achievements. It’s a lofty goal, but a realistic one.
According to a top-secret email she sent me, the reason is to build a system that can mobilize the entire country to support her beloved Sago-sama in times of need. Her loyalty is heavy. Too heavy. It’s scary…
If you put it nicely, she’s pro-Japan. If you put it badly, she’s a traitor to her own country. As always, she’s a troublesome fan. The future person’s evaluation of her as the boss’s most loyal retainer was no exaggeration. If left alone, her excessive loyalty could turn into something dangerous, so it seems necessary to keep her on a moderate leash.

And then—
I was mopping an empty floor at the magic castle bar Ama-no-Iwato, located in the vast underground cavern of Antarctica.
With the World Shadow gone and Shouta-kun and Touka-chan overseas, the place had become markedly quiet. It’s not that no one ever comes, but visits are infrequent.
I stopped cleaning, rested both hands on the top of the mop handle, leaned my chin there, and gazed at the photos pinned to the corkboard on the wall.
A slightly shadowed solo shot of Touka-chan back when she was still a second-year middle schooler. A two-shot of Touka-chan and Shouta-kun smiling over snacks brought during study time. The newer the photos, the more people there are, and the brighter the atmosphere becomes. After the commemorative group photo taken after defeating the core World Shadow, no new photos have been added.

As I stood there absentmindedly, wrapped in a mix of fulfillment and melancholy, Shiori suddenly appeared, wearing a relaxed peach-colored dress.
She smiled with a beauty unchanged from when we first met—no, more radiant than ever—and leaned her head against my shoulder, following my gaze.

“Were you looking at the photos?”
“Yeah. I don’t know… maybe this is what they call being a proud father. Everyone grew up so well. It was fun. We did it. But there’s still a sense of loneliness.”
“Is there?”
“You don’t feel that way, Shiori? Not long ago, at this hour, four or five people would’ve gathered. Now it’s just you and me.”
“No, it’s three. We’re not alone.”

With a mischievous smile, Shiori gently placed a hand on her stomach.
For a moment, my mind went completely blank.
Then I couldn’t help myself, and I gently embraced Shiori.

Yeah, that’s right.
I know the future is lively and joyful.
I—no, we—created those companions, that world, that future.

“Kinemitsu-san, will you think of a name for our daughter?”
“Yeah. You’re right. When our daughter is born, her name will be—”