Sakurajima Mai.
Originally from Kanagawa Prefecture, she debuted as a child star at the age of six and was active.
As is well known, almost all child stars fade into obscurity as they get older.
But Sakurajima Mai, while balancing both her studies and acting career, became a household name across the island nation at the age of fourteen, becoming a well-known artist.
However, just as her popularity reached its peak, she suddenly announced that she would cease her acting activities.
Her mother and manager tried their best to dissuade her, but they still couldn't stop Sakurajima Mai's strong desire to retire.
Unable to change her mind, her mother had no choice but to agree to the girl's request for retirement.
However, the daily ideological work further made Sakurajima Mai feel boredom towards her acting career.
In this situation, the girl developed a mindset of "I wish I were an ordinary person," which gradually transformed into the slightly extreme mindset of "I wish everyone couldn't see me."
And reality fulfilled her wish, turning into a situation where even if she wore a Bunny Girl uniform and wandered around a campus full of students, no one would notice her.
Then, she panicked.
And then, she met Rosen.
"The entire school... no, almost the entire city, only you can see me. Do you know what's going on now?"
Sakurajima Mai's tone was a little hurried.
She was like a drowning person who couldn't swim, and Rosen was her lifeline.
"I only know a little about your situation."
Rosen used his index finger to indicate a small distance.
Although he knew that Sakurajima Mai's condition was called "Puberty Syndrome," he might not understand it as clearly as the person experiencing it.
After all, the original work was a romantic drama with supernatural abilities, occasionally giving out sweet moments and sharp turns, which could attract a large number of fans.
As for the so-called "Puberty Syndrome."
Although the original work had an explanation of "this is a kind of collective hypnosis," in reality, this thing was just like quantum mechanics.
No matter what special situation occurred, a phrase like "this is Puberty Syndrome" could explain it clearly.
But in fact, saying it was like saying nothing.
In Rosen's opinion, the so-called "Puberty Syndrome" had already developed into something super mysterious.
Situations like Sakurajima Mai's "disappearance" were still normal; later, there even appeared "future simulation," "personal splitting," "body swapping," "time travel," "entering parallel worlds," and the most unbearable to Rosen, "quantum entanglement" state.
If one truly wanted to solve the trouble, they had to start with the individual.
"I don't know either. I just… one day, I suddenly found that some people couldn't notice me, and then the range and duration became wider and longer."
Sakurajima Mai sighed.
"Think carefully, do you have any problems yourself? For example, when did you first notice this situation?"
Rosen asked.
"...It should have been half a year ago."
She couldn't remember the specific details.
"Half a year ago, I remember that was after your last movie was released and concluded."
Rosen said.
"How do you know so much?"
Sakurajima Mai looked up in surprise.
"A national goddess, your portraits are on streets, alleys, and everyday items. It's hard for me not to know."
And because she was a familiar two-dimensional character, Rosen paid a little attention to this celebrity.
However, he didn't invest too much attention.
After all, at that time, he was just an ordinary student researching the Golden Finger.
Even if he wanted to build a harem here, he would at least need some capital.
No money, no Golden Finger, and not excellent enough himself, why would those two-dimensional beautiful girls take a liking to him?
Even if two-dimensional girls were gentler than real-life girls, a rash approach would ultimately only result in a response like "You're a good person."
"Uh… sorry."
"There's no need to apologize. That's just because you're excellent enough."
Although she had heard enough flattery and praise, hearing it from Rosen unexpectedly made her feel somewhat pleased.
"I don't know if you've noticed, but the time when you started becoming unnoticeable to others coincided exactly with the end of all your performing activities."
"It seems that way."
Although she had announced her retirement several years ago, the contracts she had signed with film and television companies before her retirement were still active.
So, it wasn't until a few months ago that she completely stopped filming.
"But what does that have to do with me being invisible?"
"At that time, you must have had a strong desire not to be noticed by others, for no one to know your thoughts."
Sakurajima Mai fell into deep thought. Thinking carefully, it was indeed true.
And at this moment.
The sound of movement came from the rooftop entrance again.
Yotsuya Miko, who had left earlier, was jogging over, her school uniform a bit disheveled, panting, but with an excited expression on her face.
"Rosen-sama! I… I succeeded!"