The seven days of the spring holiday season passed quickly and time moved into late February.

The box office figures for every film in the spring holiday window dropped sharply as the holiday period ended and the returning-to-work migration began.

This was the standard pattern and it would partially reverse over the following weekend, when the wave of people returning from their hometowns settled back into normal city life and the cinema became an option again. A second smaller peak was predictable and reliable.

But for Rei, Illumination Production Company, and Shirogane Animation, the first working day back from the holiday break was not about box office projections. It was a team event, booked at a hotel in central Tokyo, to formally acknowledge what the Demon Slayer: Kimetsu no Yaiba, Infinity Castle Arc release had accomplished.

There was nothing premature about this. The first week's domestic box office had cleared 52 billion yen, recovering the production and promotional costs entirely and generating significant profit on top.

The overseas performance had exceeded the internal projections. The spring holiday season exposure had functioned exactly as intended, creating a wave of IP visibility that would translate into merchandise and manga sales for months. The celebration was warranted.

Rei gave a speech he had spent two hours writing, kept it as short as he could manage, handed the remaining hosting duties to Misaki and Himari, and walked to the hotel window alone.

Below, the street had been dressed with large Demon Slayer promotional posters arranged by the company's events team in advance. A cluster of reporters and fans had gathered on the pavement outside the building's entrance, held back by security.

The crowd was patient and organised in the specific way of people who were happy to wait.

Standing at the window looking down at all of it, Rei felt something he did not encounter often.

A mild, quiet melancholy.

Seven years.

His first year of high school through to the final semester of university. From an orphaned teenager with a specific category of knowledge that no one around him could access, to the person the crowd below was waiting to catch a glimpse of.

The most prominent figure in the history of Japanese animation by any reasonable measure, and twenty-two years old.

He was still turning this over when his phone produced a notification sound.

Miyu.

'How is the victory banquet?'

Very boring, he typed back.

Do you want to sneak out?

The street below is full of fans. If I go out alone I will be surrounded immediately. Some of the more enthusiastic ones might try to grope me.

Wait. Male mangakas have fans like that?

You said 'too.' Am I to understand that you...

It happens at signing events. Fans shake my hand and then will not release it. They keep holding on. It is a specific situation.

Rei read this and felt something move through him that was not entirely comfortable.

Are you angry? she sent, followed immediately by a small laughing character.

No.

I can tell from how you type.

That is your imagination.

The conversation continued across twenty minutes of easy back-and-forth, the kind of exchange that had been happening between them for years and had recently acquired a texture that the years before had not quite had. Then Miyu sent a message that was different in register from everything preceding it.

Out of all your anime works, my favourite is Five Centimeters Per Second. But there is one line in it that I genuinely hate. Can you guess which one?

Rei's typing stopped.

He had watched Five Centimeters Per Second more times than he could accurately count across both lives. The work was built around specific kinds of emotional precision and there were many lines in it that operated with that precision at full force.

But given who was sending this message and what she was saying, and the specific way she had said it, the answer arrived in less than ten seconds.

He did not reply by text. He called.

"Why did you suddenly call when we were chatting so well?" Her voice on the other end was bright and slightly surprised and not at all nervous, which was exactly like her.

"The line you are talking about is: 'Even if we exchange a thousand messages, the distance between our hearts would not move even a centimetre closer.' Is that right?"

Silence on the other end. 𝗳𝚛𝗲𝕖𝚠𝚎𝚋𝗻𝗼𝕧𝗲𝐥.𝚌𝚘𝐦

No denial was its own confirmation.

"That is just a manga," Rei said. "I would not be that oblivious in real life. I had actually planned to wait until spring, after the semester started, when things bloom, and find somewhere nicer to do this properly. But. Miyu Yukishiro, will you go out with me?"

"Yes."

The number thirteen appeared as a standalone message below her reply, which was clearly a mistake she had made while apparently dropping her phone, and he found this very characteristic of her.

Rei was not, by nature, a person who found the elaborate romantic gestures that anime and television dramas treated as the standard approach to these situations anything other than mildly embarrassing.

He was the most prominent anime creator in Japan and he had written more of those scenes than he could easily count, and watching them in other people's work he found them affecting, and the prospect of performing one himself was a different matter entirely.

Once he had confirmed what he needed to confirm, there was exactly one thing he wanted to do.

He found the photograph from a few days earlier. The one taken outside the cinema after they had watched the Demon Slayer: Kimetsu no Yaiba, Infinity Castle Arc premiere together.

He had been in the Giyu Tomioka cosplay makeup that the promotional event had put him in, the Water Hashira's calm expression that the makeup artist had apparently found very natural on his face. Miyu had been in a Shinobu Kocho cosplay that she had arranged herself and had not mentioned to him until she appeared in it.

Their heads were close together in the photo. His expression was level. Hers was doing something between mischievous and pleased.

They looked, in the specific way of two people who had known each other for seven years and had finally stopped pretending the knowing was only professional, exactly like what they were.

He posted the photo to every verified account he maintained across every platform, with a single line of text.

Girlfriend.

The victory banquet was still running when the post went up.

Company employees who happened to check their phones mid-toast encountered it and stared at their screens with the expression of people trying to determine whether they were reading something correctly.

The media outlets covering the spring holiday season box office aftermath suddenly had a different story.

Rei's fan base across Japan, which ran into the hundreds of millions, encountered the post with a collective response that moved through several stages rapidly: confusion, the hypothesis that this was some form of Demon Slayer promotional content, the realisation that it was not, and then the specific energy that follows that realisation.

The operations team at Shirogane Animation, several of whom were at the banquet, looked at their phones and then looked at each other with the expression of professionals who had not been consulted on a significant public communications decision.

Misaki looked across the room at Rei, who had found a quiet corner and was sitting with grape juice, watching the reactions unfold with the expression of someone who had done the thing he intended to do and was at peace with it.

He raised his glass slightly when he caught her eye.

His lips moved.

She read it clearly enough.

Don't worry. I am serious.

She exhaled and shook her head and felt, underneath the exasperation, something that was genuinely warm.

The post produced the wave of discussion that a post from Shirogane at any point would have produced, amplified by the specific content.

The Japan anime community spent several days processing it, arguing about it, celebrating it, and in some corners mourning it in the way that a portion of any public figure's fan base mourns the confirmation that the public figure has a private life.

For Rei, the practical changes were limited.

His work schedule did not change. His public obligations did not change. His relationship with both companies did not change.

What changed was that the messages he and Miyu exchanged throughout the day became more frequent.

When they went out together now, the quality of the interaction had changed in a way that was visible to anyone paying attention. Miyu would hook her arm through Rei's without any of the careful calculation that had preceded every similar gesture before.

She handed him her bag to carry as a matter of course. When buying drinks she would bring the straw to his mouth to share without announcing it or watching for his reaction. Seven years of accumulation expressing itself through the specific ease of people who no longer needed to manage the distance between them.

The Demon Slayer manga tankōbon sales experienced another surge in the wake of the film's performance and Rei's post. Touch of Glass's tankōbon saw its own significant jump.

High school classmates, university alumni, seven years of knowing each other before confirming the relationship in the final semester before graduation: the story had an obvious appeal, and a large portion of Shirogane-sensei's fan base converted their goodwill toward him into active support for his girlfriend's work without being asked to.

With the Demon Slayer manga on its scheduled hiatus, Touch of Glass had stabilised at third in the Dream Comic Journal popularity rankings. The combination of the announcement's effect and the ongoing attention was holding it there.

Rei was not particularly focused on any of this.

As soon as February ended, the company schedules shifted completely. Demon Slayer was still in theatres and still generating daily box office, but internally both Illumination Production Company and Shirogane Animation had moved their attention forward. The Attack on Titan anime was premiering in April. March was the promotional build.

The campaign began with character design material released in volume. Then world-building information. The specific visual language of the Titan setting, the architecture and geography and technology of the world, began assembling itself in the public imagination through controlled releases of material across every platform.

By mid-March, in terms of discussion volume across Japan's anime community, Attack on Titan had reached second place in the rankings.

Behind only Demon Slayer, which was still actively theatrical and still being discussed daily.