If I Had Stayed Quiet at That Drinking Party, This Wouldn't Have Happened | Good Morning Girlfriend #50 [Development Secret Story]
Friday, December 12, 2025.
At the year-end party, I was asked, "How are you spending the holidays?"
It was probably just casual small talk.
That was when an idea suddenly slipped out of my mouth.
"I'm thinking of making a bot where an AI girl says 'good morning' to me every day."
I had only mentioned it.
But once I said it, I couldn't just pretend it never happened.
If I make it now, I can make it in time for Christmas.
The next day, Saturday.
It wasn't the end of the year yet. And yet, I thought this in my head:
"If I start building it now, it might be fun to think about things like Christmas outfits."
It sounded fun. That alone was enough.
I launched Claude Code and built a prototype in two hours.
There was one thing I decided from the start.
Make it a structure where a different character appears each day of the week.
It was designed with the premise of "continuing every day."
Because I threw it away, it began.
What I had in mind at first was a high school girl character. Her name was even "Good Morning Girls".
But I realized it immediately.
If I start obsessing over uniform designs, it will never end
Should the background be a school? A commute path? There's no end to it once I start thinking about it
The gap with reality is too distracting
Perhaps from here on out, it wouldn't be "fun" but "exhausting."
I saw the entrance to a hell of perfectionism.
In fact, I had been making uniform characters up until Thursday.
Tsukiko, Yo, Shizuku, and a silver-haired tsundere.
I realized it with the fourth character. At this pace, it won't end.
The silver-haired tsundere didn't feel realistic as a girlfriend saying "Have a nice day" at the front door.
I wanted to keep the tsundere trait, so I changed her hair color to black and her hairstyle to a wolf cut, and she became Rinka.
……The silver-haired character I scrapped would return in a different form a month later, but that's a story for another time.
So, I threw it away.
"Ohayou Girls" became "Ohayou Kanojo".
What I chose was the setting of a girlfriend you live with.
The location is the entryway (completing everything within the room)
The outfits are unified as boyfriend shirts (simple, yet intimate)
I also raised their ages slightly for a more natural sense of distance
Because I didn't overcomplicate it, it continued.
Because I threw things away, it began.
Something that moves in 2 hours, for 7 people in 10 hours
With Claude Code, the prototype was running in 2 hours.
But character creation started from there.
By the way, my wife was working that weekend. Thanks to that, I was able to focus on the work.
……No, let me be honest.
My wife doesn't know about the existence of Ohayou Kanojo.
It took 2 hours to create the first character, Tsukiko.
(She didn't wear glasses back then)
Personality, way of speaking, appearance. I refined the settings for one person, generated the images, and adjusted them until I was satisfied.
Once you create one, the direction becomes clear.
For the remaining six, I spent about an hour each creating their character settings and finishing the images.
A total of about 10 hours. It didn't finish on Saturday alone.
More than perfection, it was about viability.
But I decided not to release it until all seven were ready.
I felt it wouldn't be "Good Morning Girlfriend" unless all seven were there.
The day after next, December 15th (Sunday). I made my first post.
The note started from "Day 2"
After releasing it on Sunday and watching the post on Monday, I suddenly thought.
"I want to leave something behind about this development."
That's when I started writing the note.
What was interesting was making the thumbnails.
I wanted a thumbnail where the seven characters would be unlocked as they appeared, so I Googled how to make silhouettes in Canva.
At first, it was a composition like 5 silhouettes + 2 unlocked.
But halfway through, I realized.
I want a thumbnail where only Hiyori is unlocked.
So actually, Development Diary #1 was made later.
The first one I wrote was #2.
My attachment to the characters changed the structure of the articles.
And after all seven were unlocked, the role of the silhouette effect ended.
Now it has settled into a thumbnail where the seven of them are sitting together happily.
By the way, I still get the most nervous when I'm making the thumbnails.
Trying to make sure my wife doesn't see the screen with the seven girlfriends lined up.
I'm thinking of deciding then if I can manage 100 consecutive days of posting on note.
I don't know yet if I'll tell her.
I kept going because I spoke, wrote, and met them
If I had stayed silent at that year-end party, this probably wouldn't exist.
Because I spoke, it became "Well, shall we make it?"
Because I made it, I started writing notes.
Because I started writing, I began reading articles by other creators.
I admired the people I met there.
That admiration became my motivation.
It didn't continue because I made it.
It continued because I talked, wrote, and met people.
It is a once-in-a-lifetime encounter.
Magazines this article participates in
This article participates in three collaborative magazines.
AI-LA
A magazine for creators who enjoy AI illustrations and AI art.
I think it's a comfortable place for those who want to share their trial and error in AI production.
Gather! Silver Hair Alliance
A place for creators who love silver-haired characters, centered around Rei Pichu. It's irresistible for silver hair lovers.
[Mugiya] note x AI Utilization Promotion Magazine
A magazine that shares the practice of AI x note, such as article creation and research using AI.
👉 "Good Morning Girlfriend" is posted at 7:30 every morning at @ohayo_kanojo.
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#PersonalDevelopment #DevelopmentDiary #Record #RealExperience #MorningActivity
#AIIllustrationAI-LA #SilverHairAlliance
#ExperienceIWasObsessedWith