A [[virtual YouTuber]] who originally started as an [[indie virtual youtuber|indie]] before joining [[hololive]]'s music label [i]INNK Music[/i]. She would later transfer to hololive proper and become part of hololive's "[[0th Generation (hololive)|Generation 0]]".

Her appearance was designed by herself. As well as the outfits from her indie days, she got a new design from [[Teshima Nari]] after joining hololive, with her newer outfits being designed by [[Saekiyahiro]].

h4. Appearance
[tn]See post #3705812 for the reference sheet.[/tn]
She has [[blue eyes]] with [[star in eye|stars]] in them and [[blue hair|blue]] [[medium hair]] with [[double-parted bangs]] hanging [[hair between eyes|between her eyes]], [[sidelocks]] and a [[side ponytail]] held with a [[blue ribbon|blue]] [[hair ribbon|ribbon]].

h5. Costumes

h6. Regular costumes

* !post #3931913: [[hoshimachi suisei (1st costume)|Current default]]
* !post #3869013: [[Hoshimachi Suisei (new Year)|New Year]]
* !post #5797750: [[Hoshimachi Suisei (casual)|Casual]]
* !post #4855094: [[hoshimachi suisei (school uniform)|School uniform]]
* !post #4858764: [[hoshimachi suisei (stellar into the galaxy)|STELLAR into the GALAXY]]
* !post #5909683: [[hoshimachi suisei (maid)|Maid]]
* !post #6022194: [[hoshimachi suisei (shout in crisis)|Shout in Crisis]]
* !post #7334712: [[hoshimachi suisei (oriental suit)|Oriental Suit]]: Gangster

h6. Other costumes

* !post #3801905: [[Hoshimachi Suisei (Old Design)|Old Design]]: indie and INoNaKa Music days

h6. Costumes shared with other members
* [[hololive idol uniform]]
* [[blue journey (hololive)|]]
* [[hololive summer 2023 swimsuit]]
* [[hololive idol uniform (bright)]]
* [[hololive dance practice uniform]]
* [[Aogami High School uniform]]
* [[Holohoneygaoka High School uniform]]

h4. Units and groups
* [[Shiranui Kensetsu]]
* [[Doukyo's]]
* [[StartEnd (hololive)|]]

h4. See also

* [[Anemachi]] ‒ her real-life sister
* [[Moku Seiko]]
* [[Sata An]]
* [[Super Idol Comet-chan]]
* pool #19733: Hololive - Hoshimachi Suisei / THE FIRST TAKE
* [[Hoshimachi Suisei (artist)]] for works attributed to her.

h4. External links

* "YouTube channel":https://www.youtube.com/channel/UC5CwaMl1eIgY8h02uZw7u8A
* "Twitter":https://twitter.com/suisei_hosimati
* "Wikipedia: Hoshimachi Suisei":https://en.wikipedia.org/wiki/Hoshimachi_Suisei
* "Hololive Wiki: Hoshimachi Suisei":https://hololive.wiki/wiki/Hoshimachi_Suisei
星街すいせい ほしまちぎゃらりー 古河七星 ほしまちギャラリー miComet