[VTuber] Special feature on talents belonging to the 8900 Project! We also explain who is inside and why it is becoming a hot topic.
This time,VTuber office “8900 Project” special featureWe will deliver it to you!
“How do you read the office name?”
“I want to know the talent I belong to!”
While answering your questions, we will also introduce the profiles of the talent we belong to and rumors about the people inside.
Also,BirthdayJAPAN is an advertising agency that specializes in Oshi Advertising® (birthday/support advertising).📢
We have a track record of supporting more than 5,000 Oshi Ads® (birthday/support ads), and have helped many fans realize their desire to support them!
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What is the VTuber office “Yakumo Project”?

Here, we will introduce the VTuber office "8900 Project".✨
The 8900 Project started as a VTuber agency in September 2025.
How to read“8900 Project (Yakumo Project)”It is.
There are two talents affiliated with the 8900 Project: ``January Ichi'' and ``Tendo San.''
This office was founded by January 1st and Tendou San with the theme of ``a place where you can make many 100s.''😉
I will introduce each profile later🥰
The 8900 Project became a hot topic right after its debut.
The reason for this is the rumor about the "people inside", which I will introduce later.
Also,The latest information on the 8900 Project is disseminated on the official website and SNS.
Please check it out.👇
Talent belonging to 8900 Project
From here, we will introduce the profiles of the talents belonging to the 8900 Project!
Currently, the two members are Hajime January, who founded the 8900 Project, and San Tendou.
Profile of Tendo-san

Tendou San is a boy who lives on the sun and dreams of going to the moon.
Tendou-san is a cheerful and chatty person who can get along with anyone.
My favorite things are sweets and my sister😉
And, Tendou San's fan name is ``San San Gumi'', and his fan mark is ``San San Gumi''.🌞🦇 (taiyou, bat).
Currently, on YouTube, I am streaming songs and games.
Profile of January 1st (Ninomaetsukihi)

January 1 is a former assassin (meaning assassin or thug) who lives on the moon even though he longs for the sun.
January 1 likes spicy food and alcohol, and when he's embarrassed, he puts on a fox mask to hide his face.😳
And, the fan name for January is "Tsukinoko" and the fan mark is "🌙🦊”.
Currently, on YouTube, I am streaming songs and games.
Who is inside (past life)?
VTuber is basically a genre that doesn't bring the people inside to the forefront, but it's a rare case like this time when the people on the inside become a hot topic.😳
Here, we will introduce information about the person inside, including whether or not it has been officially announced.
Rumors about people in Tendou-san
There are various speculations regarding the people in Tendo-san, based on their voices and speaking styles.
However, there is no information officially released at this time. (As of April 2026)
Rumors about people in January
There are various speculations regarding the person in January Ichi, based on their voice and way of speaking.
However, there is no information officially released at this time. (As of April 2026)
Let's support your favorite with our favorite advertisement (birthday/support advertisement)!

Recently, I have been seeing more and more various Oshikatsu cultures.😊
Here, we will introduce Oshi advertising (birthday/support advertising), which is one of Oshi-katsu culture.
What is a push advertisement (birthday/support advertisement)?
Have you ever heard of the term "Oshi Advertising (Birthday/Cheering Advertising)"?
What is push advertising?Advertisements for fans to support their favorites”.
This is one of the Oshikatsu cultures that started in Korea.BirthdayAlso called (birthday) advertisement or support advertisement.
Fans from all over the world who want to support their favorites and celebrate their birthdays and anniversaries voluntarily place non-commercial advertisements.😊
In recent years, popular genres have expanded to include Japanese idols, artists, YouTubers, VTubers, and athletes.💡
Make it come true with your friends with “Oshikura Fan”! Dream Push Advertisement (Birthday/Cheering Advertisement) Project

"I'd like to run a promotional ad, but I'm worried about the cost and it seems like a lot of preparation..."I'm sure there are people who are worried about this.
What I would like to introduce to such people is “Oshikura fan”.
What is Oshikurafan?
「Individuals launch and plan projectsA service where supporting people donate money to support advertising (birthday/support advertising).」
That's it!
A major benefit is that by pooling support funds among people who agree with the project, it is possible to issue large-scale advertisements that would be difficult to do alone.
BirthdayThis service operated by JAPAN provides full support from project launch to fund collection and management, advertising space arrangement, design production, and return shipping.💁
It is also attractive that the donations collected can be used to plan advertisements (birthday/support advertisements).
So far, club fans such as "G-DRAGON", professional e-sports team "REJECT", and VTuber "Mashiro Nagino" have achieved the target amount and promotion advertisements (birthday/support advertisements) have been carried out!

Even if you are a first-timer and don't know where to start, our dedicated staff will carefully support you.🎶
In the unlikely event that the target amount is not reached, there will be no fees and a full refund will be given to supporters, so don't worry.
Also, “I want to be a supporter rather than a project founder.If you have any questions about Oshikura fans, please feel free to contact us on the official LINE page for free chat and telephone consultation!
「I want to know more about Oshikura fans!”, please take a look here!
We will introduce in detail the types of advertisements that can be placed on Oshikura Fan and the process to achieve them.♪
Frequently asked questions about the 8900 Project
Summary
This time, we have brought you a special feature on VTuber office's 8900 Project.😊
Keep an eye on the future activities of the two affiliated talents.
Why not put out a fan advertisement (birthday/support advertisement) to coincide with the important timing of your favorite, such as a birthday, comeback, or debut commemoration?
If you want to give shape to your desire to support your favorites, pleaseBirthdayPlease feel free to contact us on JAPAN's official LINE♪
BirthdayLeave it to JAPAN!

Read this article
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Isn't there a lot of people who thought so?✨
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In such a case, pleaseBirthdayPlease contact JAPAN!
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Additionally, you can chat with our staff or consult over the phone, so even first-time users can use our service with confidence.📞

Consultation about Oshi Advertising® → media arrangement → design production → post-posting report can all be completed with just LINE, so feel free to add us as a friend!
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