On the first day of review after modifying her hobbies, everything seemed to be going well.

At that moment, I deliberately veered towards the nurse's office and pretended to glance inside on my way to the dining hall, where I found Professor Ainara with a red face, looking a bit distracted.

"It really worked..."

It looked very strange and tempting. After all, the usually diligent professor was so distracted that it showed. In addition, the contrast between her plump and attractive body and her rosy cheeks like a little girl's offered a contrast that really excited me.

"Well, I'll have to find an opportunity later to deepen my impression on her. After all, it might be my chance to experience a relationship..."

After muttering my thoughts to calm myself down about how well the situation was going, I made a decision.

"Pretending to be sick will leave a bad impression and make her suspicious, so I have to find another way to get closer..."

I decided to go in, casually pretending to bring her some snacks, taking advantage of the information I had about her hobbies to approach her.

"....."

At that moment, the teacher stared at me, surprised, upon my entering without saying a word while a chill ran down my spine. The truth is, now that I think about it, maybe that was the first sign that something was wrong... However, I decided to ignore it, hoping that this kind of experiment, similar to Pavlov's dog, would work, filled with anxiety and anticipation...

Time passed in this way. A week went by until the seventh day of the review arrived.

"Ugh... It hurts more than I expected..."

That day, I sprained my foot on purpose in gym class to go to the nurse's office. I could have faked being sick, of course, but the same trick wouldn't work as often.

And, being honest with myself, that was quite painful. But, judging by how things were going with the experiment, everything seemed to be going well and the results were quite positive.

After many secret observations, I discovered that, while I was passing by the nurse's office, the teacher's mood improved a lot. On the contrary, it worsened, looking a bit lost, when she didn't see me.

"Ah, you came again today too!"

"Yes, I'll need your help today too, Teacher."

"Leave it to me!"

Now she would greet me cheerfully every time she saw me. Compared to her initial professional attitude, she now radiated an aura of familiarity, and all this in just one week.

All I had to do was deliberately veer at a certain time towards the convenience store where the teacher normally walked. This made us "accidentally" see each other more often, our eyes meeting, or sometimes she would simply watch me from a distance, in silence and with a flushed face.

Perhaps she thought I didn't notice the times when she seemed to look at me with jealousy when I talked too much with the redhead employee who occasionally worked there. Even though the employee didn't even pay attention to me in those moments, her jealousy was adorable to me, as I felt on the peak of joy, feigning normality.

From the fifth day, she would take the initiative to greet me every time I passed by, and she looked very happy when I responded.

To be honest, her unprecedented behavior made many male students at the school feel envious. Luckily, it didn't turn into harassment, partly because when things seemed to be going wrong, I would call Leo, who always came to help, even if we didn't study at the same place.

So, thanks to Leo and a few teachers, including Teacher Ainara, nothing got out of hand. Because of that, I could now have friendly conversations with the teacher, who would blush, discreetly gasping a little when she saw me, even though we weren't lovers or anything beyond teacher and student.

Honestly, I should have noticed how more and more, from that moment on, she seemed to become a stalker who would appropriate an idol's belongings. But I, blinded by the positive results, ignored the possible negatives.

The source of this was a modification I made to the teacher's hobbies that day on my way to the nurse's office, based on an idea.

[Name: Ainara Kaelaneth]

[Hobbies: Reading]

[Hobbies: Sleeping]

[Hobbies: Eating snacks while watching series]

[Hobbies: Masturbating while thinking of the student Cedro]

[Hobbies: Masturbating every day.]

[Hobbies: Secretly watching Cedro]

[Hobbies: Sniffing Cedro's scent]

[Hobbies: Greeting Cedro]

Among the teacher's recent hobbies, I actually only added one: "sniffing Cedro's scent." While the other two extras appeared suddenly on the second and fifth days.

Perhaps the constant masturbation thinking of me caused some sudden change? For example, did she mistakenly believe she was in love with me or something?

If so, I took it as a great success and ignored the synergy that these hobbies would have with each other or how they could affect the teacher.

But that day I didn't suspect anything. I was focused on watching how the teacher leaned over to wipe the sweat from my face. Her deep cleavage, exposed to me, occupied my attention as I thought about how I could soon play with her as much as I wanted by entering into a relationship. However, the risk of going to jail prevented me from doing anything. I could only imagine. My crotch was so erect that it looked like it was going to explode, and a large "tent" even formed, which left me with no choice but to bend down to cover it.

"Ah... that...! Teacher...?"

Luckily, I had sprained my ankle, so bending down didn't look too out of place...

"Ah... uh... are you okay? Why are you so careless?"

Feigning confusion, I took the opportunity to try and direct her attention elsewhere, hoping she wouldn't notice the "tent" in my pants. At that, she carefully put away the towel she had in her hand, stopping wiping the sweat from my body as if waking from a trance, before checking my ankle.

"Mmm... it's nothing serious. I'm going to put some medicine on it. Just avoid intense exercise and rest more... Okay, come to the nurse's office every day for observation."

She seemed reluctant to let go of my feet, applied some medicine, and then gave me some suggestions naturally.

What kind of doctor would make a student come to the nurse's office every day just because he sprained his ankle?

I should have asked myself those questions, I should have started to suspect something, but instead I didn't, focused on hiding the jealous glances directed at me for hogging the teacher's attention.

"......"

Unaware that behind me, someone was watching with a smile.

"Okay, thank you, I'll do it."

But still not noticing the signs, I accepted, ignorant of the danger.

It was only on the fourteenth day that I finally started to notice something.

After a few days of examination in the nurse's office, the teacher, who seemed to have run out of excuses to keep me there, suggested we exchange LINE accounts. Now we chat daily. Although she's the one who finds topics on her own and I'm the one who abruptly ends them. From that moment, we started calling each other by our first names.

So we continued chatting together every day, from morning, afternoon, and night, with almost no break or time to breathe.

It was then that I first started to realize just how deep her obsession could really be...

From that moment on, I started to think, noticing the signs I had been ignoring. Like when, upon leaving the nurse's office after she applied the medicine, I observed her in silence and saw her holding the towel she had just used to wipe my sweat, as if she had found a treasure. I didn't know what she was doing. It seemed a little dangerous to keep watching her, so I left decisively.

Or about how my next-door neighbor recently came up to me, happily saying he had amassed a fortune and was moving, then handed out gifts to all the households.

What could I do? I could only smile. Damn it! I was so envious. I wanted to amass a fortune too. And why had everyone on this floor recently amassed a fortune and moved? Damn it! Why not me...?

...But now I can start to see the answer. At that moment, while I was typing on the computer with envy and jealousy in my mind, the doorbell rang.

"Hey, I'm coming..."

(I didn't buy anything, did I?)

I thought naively as I ran to open the door, only to be shocked by the scene in front of me.

"Hello, student Cedro."

"Teacher Ainara?!"

The person who had arrived was Professor Ainara Kaelaneth. At that moment, she had taken off her usual white coat, but was still wearing the classic combination of a white shirt, a black pencil skirt, and black stockings. However, the tight and trembling buttons on her chest were undone, leaving her firm breasts exposed.

As for the lower part of her body, the skirt, which was originally a bit long, making the woman look sexy, elegant, and somewhat conservative, had now been shortened to barely cover her hips.

At that moment, she was wearing a very sensual outfit and handing me an exquisite bag. Since she was leaning over and her collar was unbuttoned, her cleavage was exposed to me.

"What are you doing here?!"

"What a coincidence! I just moved here. It's a gift from me; please, accept it."

"No, no, no! How can it be a coincidence? I just moved, and she's here! And the place isn't close to the school, is it? And I remember the school had residences for teachers, right? After all, why would someone with so much wealth and contacts live in a building with such poor sound insulation? And isn't the dress a bit low-cut?! And this gift looks so luxurious! It looks like they only prepared one gift!"

"Oh, yes, what a great coincidence! Thank you very much!"

In short, that was the point where I realized something was wrong. However, with no other option, I accepted the gift, forcing the most natural smile possible at that moment.

"Relax, everything is fine; she's just a rich and somewhat obsessive woman... I still have control..."

But I could feel it, feel that it was already too late to delete the applied hobbies. When I tried to delete the hobby: "watching series while eating snacks," I discovered that it returned a few days later.

Finally, I understood what this application did. If I don't delete a hobby completely, the habit will come back sooner or later. However, if I delete all the hobbies that I modified, I will undoubtedly risk being discovered. It's better to keep making mistakes. In the worst-case scenario, I'll be sunk in a Bay with cement if I don't pull it off.

When the lust cooled from my mind, I suppressed the growing panic in me to calmly analyze the situation, not understanding that maybe it was already too late.

"....."

On the 22nd day, when I turned around, I realized, thanks to the Hobbymod app —which indicates the location of human beings in a nearby radius— that I had turned Teacher Ainara into a pervert... or maybe she already was. Although I feel like a pervert wouldn't be interested in an ordinary high school student like me...

"It really is her..."

Muttering that, I feigned taking a shortcut and threw the handkerchief I used to wipe my sweat onto the path.

"Oh, I forgot to buy some handkerchiefs at home..."

I muttered out loud to myself and then hurried back along the path.

"..."

I walked past the teacher, who was still walking ahead, and looked at the place where I had just thrown the handkerchief.

"......"

As expected, it was gone... On school days, I would go to and from school by train with the teacher, despite there being no reason for her to do so on weekends. After all, I wasn't dating the teacher yet, and teacher-student relationships were generally prohibited in that environment.

So, was she secretly following me on weekends...? It's a little scary... No, it's definitely scary.

Especially since the residents on this floor have been moving out one after another, and now it's just the teacher and me... This must be her doing... I feel like if I look through the peephole, I can see pupils looking back at me... What a terrifying story... This wealthy woman has become a complete stalker and a pervert...

While I was analyzing, I took a look at the content displayed on my phone:

[Name: Ainara Kaelaneth]

[Hobbies: Reading]

[Hobbies: Sleeping]

[Hobbies: Eating snacks while watching series]

[Hobbies: Masturbating while thinking of the student Cedro]

[Hobbies: Masturbating every day.]

[Hobbies: Secretly watching Cedro]

[Hobbies: Sniffing Cedro's scent]

[Hobbies: Greeting Cedro]

[Hobbies: Collecting items used by Cedro]

[Hobbies: Following Cedro]

Although I actually only modified four of them: one, so she'd watch TV series with snacks and thus check the program's effect; two, so she'd think of me while masturbating and do it daily; and the last one so she'd smell my scent. The rest were new interests derived from these three.

"Not to mention that she's about to embark on a criminal path. This young woman is already a full-blown criminal pervert... Is she going to become a yandere...?"

No, maybe she already is...

Upon seeing the LINE messages that appeared on my phone, I felt a headache and panic.

After that, things escalated on the 28th day, when my underwear disappeared, or rather, it was replaced with new underwear when I woke up.

"....."

The door also showed signs of invasion.

"Watching anime... Help... Now I'm grateful to the one who stole my idea...!"

In short, Teacher Ainara Kaelaneth sneaked into my room and, secretly, replaced my belongings with new ones. My underwear was the most affected, while my toothbrush and towel were relatively less tampered with.

At this rate, it's possible I might wake up and find myself tied up and immobilized, locked in the basement...

Especially considering what her hobbies are now.

[Name: Ainara Kaelaneth]

[Hobbies: Masturbating while thinking of the student Cedro]

[Hobbies: Masturbating every day.]

[Hobbies: Secretly watching Cedro]

[Hobbies: Sniffing Cedro's scent]

[Hobbies: Greeting Cedro]

[Hobbies: Collecting items used by Cedro]

[Hobbies: Following Cedro]

[Hobbies: Masturbating with items used by Cedro]

[Hobbies: Watching Cedro masturbate]

[Hobbies: Masturbating while imagining Cedro]

[Hobbies: Masturbating while imagining Cedro's voice]

[Hobbies: Masturbating with Cedro's scent]

Now she's following me closely... about 10 meters away? After all, the screen is practically stuck to me... And now she no longer reads or watches series; her interest has been completely replaced by all kinds of masturbation... Although I haven't made any changes, Ainara Kaelaneth is completely broken.

Remembering the tracking of the last few days and the purchases she has made, I'm sure she will attack tonight, and she has made sure to cut off all my contacts... However, I still have one hope!

When things started to get out of control, I asked Leo for help. When he received my call at night, he was supposed to call the police, and with all the evidence I asked him to collect, he should be able to free me... So...

"Leo, where are you?!"

I've been calling all night!

Although he said he was going out with a new friend, he should have come back by now!

"CEDRO~~~"

"?!"

PLEASE LEO COME QUICKLY!!