Welcome to Hoshiyomi Observatory! A fan page made by Hoshiyomis, for Hoshiyomis! A site aimed at overseas or non-Japanese speaking fans of Hoshimachi Suisei! If you are interested or eager to know more about Sui-chan, then this place might be able to get you up to speed!

There is also a Discord invite link for both EN and JP Suisei Discord Servers (Known as Suiseicord) in here. Click on the "Discord" tab for more details. The JP fansite, "Hoshiyomi Studio" is also linked if you may be interested! Do check it out!

KYOU
MO
KAWAII

SUI CHAN
WA?

HOSHIMACHI SUISEI

「星街すいせい」is a Japanese Vtuber who debuted on March 22, 2018. She was originally an independent up until July 1, 2018, where she joined a group called "S:gnal". A month later, her manager made an announcement that she would be graduating from the said group.

As time progressed during her career, she came to the realization that carrying on with her activities as a solo idol was becoming too difficult.
Sui-chan tried to do various things to gain more attention and even went to the extent of finding jobs, like making MVs for companies to fund her own activities.

Around 2019, she applied to join Hololive as part of their Vtuber talents. Sadly, her initial application was turned down. Knowing that she could no longer keep up being a solo, she mustered up the courage to reply to the same e-mail that informed her about her rejection, asking them if they would somehow give her a chance to prove herself to join Hololive.
In which she succeeded and, alongside AZKi, was assigned to be a part of INNK MUSIC, a music label under Hololive.

Full History

HOSHIYOMI

The name of Sui-chan's fanbase. Originally named as "Cometomo" 「こめとも」which was decided by a Twitter poll on May 5, 2018, during Suisei's first live stream on YouTube. It was then changed to name her fanbase as "Hoshiyomis" 「星詠み」meaning Stargazers in English. A clever name, seeing as they are the ones observing and watching our Comet Idol.

Blood Type
A

Weight
43kg

JP
星街すいせい

Birthplace
Virtual

Dominant Hand
Right Hand

Birthday
March 22

Hiragana
ほしまちすいせい

Height
160cm

Three Size
70/55/75

Horoscope
Aries

Age
18 years old

Interest
Anything!!

HOSHIMACHI
SUISEI

CHARACTER
PROFILE

Missed the latest stream? Feeling lost? Or uncertain of Sui-chan's most recent activities?

Worry no more, this section of the site is dedicated to keeping visitors up-to-date with Sui-chan's recent activities and streams!

If there are any announcements or upcoming events that Suisei will be involved in, Hoshiyomi Observatory will keep you posted!

RECENT STREAM

RECENT TWEETS

SUI-CHAN'S TWITTER

HEIKOUSEN TWITTER

HOSHIMACHI SUISEI'S ORIGINAL SONGS

1st Original song

Comet

Suisei's first original song uploaded on November 22, 2018. A song filled with her hopes and dreams as an AYT (Aidoru Youtuber) and the promise of making it big.

Believe it or not, her potential in singing can already be observed through her earlier covers. Sung with a happy and melodic tune, it doesn't fail to make Hoshiyomis feel emotional...

Comet broke the 1 million Youtube view counts on 16th of July 2020. Surpassed the 2 million view count on December 5.

2nd Original Song

Celestial Spheres,
Comets Straddling The Night

Suisei's second original song. This time the song is in a rock genre. She was struggling during her first year as a VTuber and even after a year, she still had a lot of trouble progressing and gathering attention on her 2nd year.

She had a total of 3,333 subscribers at the beginning of 2019.

Tenkyuu, Suisei wa Yoru wo Mataide 「天球、彗星は夜を跨いで 」expresses Sui-chan's feelings of pain, anxiety, and uncertainty due to what she has been going through at that time. She also stated that if she ever decided on quitting that time, Tenkyuu would have been her parting and final song.

Alongside their cover of Saga Jihen by Suisei with all 3rd Generation Hololive members. It is her most viewed video and  Original song in her career. Currently has over 4 million views, reaching an exponential growth in view count over just a few months. On March 27, 2020, it reached 1 million views. On May 30th, it reached 2 million and soon followed by 3 million on August 9th. The same year, it reached 4 million on October 16.

3rd Original song

Next Color Planet

Changing the pace and livening mood now, NCP is her third original song. Being a party-themed and celebratory type song... Sui was also able to have the chance to ask Hololive management to help her get to work with Arte Refact on her Original Song!

It has been her dream to be able to work with Arte Refact in producing a song together. During her 3D live birthday celebration, Sui-chan sang NCP as a surprise and as the last song for that event. She then announced after that the MV will be released the following day. You can clearly observe how happy and grateful Sui-chan is to be able to get this far and to finally, find the right place where she can be herself.

Sui-chan is so beautiful and cute moving around the MV with her 3D Model!

NEXT COLOR PLANET broke the 1 million view count milestone on June 6, 2020. Broke the 2 million view count milestone on August 5th. Passed 3 Million views on September 28. And 4 million on November 28.

Powerful and
Attractive Voice!

Sui-chan normally speaks in a very energetic, high tone on stream... but surprisingly, she has remarkable singing skills!

She forms an atmosphere that captivates the audience and leaves them in awe...  Like how a true idol with an exemplary talent!

Sui-chan also strives to improve her talent through practice. And thus it makes it a lot more enjoyable because, with every Karaoke or acapella stream, you can watch her grow and be amazed by her efforts to refine her singing!

Come, and experience her voice as she lights up the sky and fills your heart with melody! 

A True Idol but also...
A Suicopath!?

An intriguing factor about Sui-chan is that she's been said to have psychopathic tendencies?!

This could be the most well-known clip of Suisei. The shining, elegant, and glamorous idol goes on a rampage, slaughtering... her friends?

Sui-chan is also seen in such a loving, caring, and pure light but why do some consider her to be scary?

Is the psychopath persona real? Is Sui-chan a psychopath or just a unique case of "Suicopath"? Find out in this clip!

Talented in Singing,
also good at Illustrations!

Part of Suisei's skillset is that she can draw wonderful illustrations! During her indie days, it was all her who worked on her Vtuber models!

A multi-talented Idol that not only does singing and dancing or video games! Watch her chat with another Vtuber personality, Inuyama Tamaki and their skillful live drawing!

The Tetris Queen?

Sui-chan is also known for being a "Hexagon warrior" by her Chinese viewers. An individual who has a decent mix of talents.
BUT there is one thing where she also shines brighter. Tetris!

Her exceptional skills have so far been unmatched by many, as other VTubers have been traumatized by her insane level of Tetris skill level.

She clearly has a decent experience with the craft, but she is quite modest with it too! She's had a very exciting, tense match with the 2nd best player worldwide in Tetris 99. Watch the historical moment of Sui-chan facing against Roy!

Charm that will make
your heart skip a beat~

Another factor that an idol must possess: A critical hitting charm!

Sui-chan looks entirely lovely, elegant, and stylish and she understands that side of her.

Unfair, but she knows how to steal the hearts of many. People love her voice and the way she moves. One could only dream of a chance to receive a confession from her!

Be warned as you watch this video, as you may die from her cuteness and her sincerity! Is your heart ready?

Skill-set of
a Multi-talented idol

Another appealing factor of Sui-chan is that she has the ability to create her own Music Videos! (MVs)

She also has a video teaching people how to use the program in her channel. And apparently has been using it long before her debut!

The most recent one she created was for Amane Kanata's cover of Uma to Shika. (The video here)

Hoshiyomi Studio has a page that contains all of the MVs that Suisei created herself in the past! They all can be found here.

MUSIC SPACE

Hoshimachi Suisei presents: MUSIC SPACE was a 30-minute music themed radio program that aired every Sunday at 5PM JST, hosted by Hoshimachi Suisei herself!

They called in talents, mainly Vtubers, who will be a guest for two sessions. Talked about a variety of topics or interests, and had a singing session during the broadcast!

The Last Episode of MUSIC SPACE was broadcasted on March 28, 2021 with the last guest being a world-class drummer, Senri Kawaguchi.

> The archives from last week's MUSIC SPACE has finally been uploaded to Cultural Broadcasting V&R's and Sui-chan's Youtube channels!

>> March 28 session for MUSIC SPACE, the FINAL episode has ended. The guest for this session was a world-class drummer Senri Kawaguchi! (@senridrums on Twitter)

MUSIC SPACE has aired for 52 episodes in total, for 1 whole year. It has been a great ride for everybody, including Sakanoue Yosuke AKA Pan-nii. They have performed over 100 songs on the radio.

Sui-chan will be having a new Radio program on April 4! Joined by seiyuu Azusa Tadokoro on Heikousen Scramble!

> Zeroblade (@zeroblade on Twitter) has tweeted the translation summary for MUSIC SPACE's FINAL Episode! Link here

WHAT'S NEW?

V&R Channel

If you tuned in late or miss the latest MUSIC SPACE program, don't worry! The entire broadcast will be uploaded next week!

Take note: It will be split into TWO parts: The first half being in Sui-chan's channel while the second half will be in V&R's YouTube channel. Occasionally, V&R Channel will also clip singing portions from the broadcasts.

Bunka Housou V&R Channel also features other Radio programs hosted by other Vtubers or various other talents! Feel free to check them out.

EN HOSHIYOMI
COMMUNITY DISCORD

Originally formed by a small fanbase who loves Suisei, now a much larger and full grown community. We are a server of dedicated fans of the cutest, somewhat humble, and the brightest comet that came from the sky.

Mainly made up of English-speaking fans, this is the place to relax and have fun chatting with people of similar interests, share Suisei fanarts, chat during her streams, and many more chill activities!

We are a chill bunch of people who come together and discuss or just hang out for fun! Feel free to join the EN Hoshiyomi Discord server, anyone is welcome!

Hoshiyomi Studio
An Unofficial Japanese Fansite for Suisei!

Hoshiyomi Studio is a Japanese fansite made to support Hoshimachi Suisei! It contains various information about her, as well as the complete compilations of all the songs Sui-chan has sung, up-to-date information with MUSIC SPACE, Youtube and Twitter, and many more!

Hoshiyomi Studio is also a big influence to the creation of Hoshiyomi Observatory! Please come and check it out!! Sui-chan is cute today too!!!

Featuring information about Hoshimachi Suisei!

As a fan site, Hoshiyomi Studio talks about Sui-chan's character and traits, as well as other fun facts and trivia about her! It is a site where you can find out more things about her!

Come check out the website as they will also continue to update the information library that they have about her! 


Can't read Japanese? We suggest using the Google Translate-plugin for your browser! It may not be as accurate, but it will enable you to understand most content from Hoshiyomi Studio.

Complete information of songs sang by Sui-chan

Hoshimachi Suisei is a very talented singer, and she knows quite a lot of songs from Anisong to JPOP and even at times classical songs. Especially from her favorite singer - Ringo Shiina!

Knowing that also means it will make one wonder if Sui-chan has or hasn't sung a certain song before. Worry no more, as the diligent and dedicated fans from the Japanese community have compiled and recorded all the songs that she has already done before!

The information includes things such as the song title, the date, artist, and many more!

Massive Song Log Spreadsheet Compilation of all Songs


Hoshiyomi Studio has an almost complete compilation of all the songs that Suisei herself sang from the past and present! Updated regularly!
To find the full Excel spreadsheet, click on the image below to be directed to the entire database!

The copyright and portrait rights of the images used on this site belong to the respective copyright holders.
*Hoshiyomi Observatory does not aim nor wish to gain or receive any form of monetary value or profit through the creation of this website.
*The main purpose of this website is to show support and to introduce Hololive's Talent: Hoshimachi Suisei.