Contrary to his shady appearance, he surprisingly speaks with a soft accent that's a mix of Kyushu and Kansai. A few livers have mentioned that he has a pleasant voice. At times, he can be quite passionate, often doing anime scene imitations or parodies during his streams. While it’s a rare sight, his groupmates find him unexpectedly funny when he loses his cool or gets flustered.
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Kaisei
AKA Kai (by Kitami Yusei) Zettasu (during NijiGTA) Kai-Nii (by Nagisa Trout) Kaachan魁星魁星(かいせい)🔑🐍にじさんじ
NIJISANJI Active
NIJISANJI:
* Twitter: 2024/03/12
* YouTube: 2024/03/15
Debut Date
9 June
Birthday
About
にじさんじ所属 バーチャルライバー 鍵屋の魁星 3SKM @3SKM_INFO スタイリスト様 @tkyk01c2 お問い合わせ🔑nijisanji.jp/contact
Character Info
Gender Male
Height 180 cm (5'11")
Birthday 9 June
Zodiac Sign Gemini
Illustrator Takita Chihiro
Community
Fan Name Regular Customer/Jouren (錠連)
Languages Japanese
Genres gaming, free-talk
Emoji 🔑🐍
Oshi Mark 🐍🔑
Tags
free talkgamingjapanlocksmith#魁星#魁星開店#かいせ絵#裏路地魁星#魁星これ開けて
Recent Activity
Recent Videos
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Introduction Video
Gallery
Personality
Appearance
He has navy blue hair with a ponytail and braid with pink streaks in his bangs with purple tinted glasses and red eyes with black slit pupils and yellow rings around his iris. He has multiple black piercings together with gold necklaces.
In his second outfit, his long hair was tied up in a high ponytail. He wore an oversized white shirt featuring the 3SKM logo, matching with his groupmate, layered over a black long-sleeved turtleneck that concealed his snake tattoo. Over that, he had on a gray half-vest, and a baggy green-and-white jacket was tied around his waist. A dog tag necklace completed the look.
Background
Kaisei's YouTube channel was created on 10 January 2024, and his Twitter account was created in February 2024. His first Tweet was made on 12 March, 2024. In addition to the members' individual channels and accounts, the unit debuted with their own official YouTube channel and Twitter account. The 3SKM's YouTube channel was created on 3 February 2024, and the unit's Twitter account was created in on the same month.
Debut
3SKM started their activities on 12 March, 2024 and would hold their first stream on 15 March, 2024.
Along with the debut streams, they also released their first original song "DIGGY DIGGY". This song was written by Kokubo Yuuki.
Fans
- His fans are called Regular Customer (錠連, Jouren).
- His 3KUMA/Sankuma fan mascot is named "K.K". He has dark green fur with red eyes.
Relationships
- "3SKM" (スリーエスケーエム) - Kaisei, Kitami Yusei, and Sakaki Ness. They are debut-mates.
- Media: YouTube | Twitter | Instagram | TikTok
- Hashtags:
- #3SKM - General tag
- "Morning at 29:00" (29時のモーニンぐー) - Kaisei, Nanase Suzuna, Oliver Evans, and Kuramochi Meruto. (Group during 2024 NIJISANJI Ikamatsuri Splatoon tournament.)
- Group III - Kaisei, Hoshirube Sho, and Milan Kestrel.
- "Mabudabuchi" (まぶだぶち) (仮) - Kaisei and Milan Kestrel. They are acclaimed childhood friends.
- Their name was announced tentatively on their first Asobi Taizen collab stream, decided on a whim when they were talking about double cheese burger (Mabu Double Cheese), and is combined with a play on "まぶだち", meaning true or close friend. It was reinforced in an Animal Crossing Stream, where Milan helped Kaisei adjust his mic settings for 3 hours (pre-stream). They originally disliked the name itself, so they added temporary (仮), but everyone around them used it anyway, so they have stuck to it.
- Memerjong (ミーマージャン) - Kaisei, Oliver Evans, Sakayori Soma, and Saiki Ittetsu. (The group was made when they collabed to play Mahjong Soul.)
- 3HBC - Kaisei, Hibachi Mana, Sakaki Ness, and Kitami Yusei.
- 3AKG - Kaisei, Akagi Wen, Sakaki Ness, and Kitami Yusei.
- Inside leg Manatee (股下マナティ) - Inui Toko, Machita Chima, Usami Rito, and Kaisei.
- They first collab during Chained Together and the name was unofficially made during Gartic Phone collab.
- King of the Coast (海岸の王) - Kaisei, Yatogami Fuma, and.
- Formerly known as Medical collapse trio (医療崩壊トリオ) in Crazy Racoon's GTA Madtown. All three of them were medic and often died together and caused medical collapse. Their name were then changed during PEAK collaboration.
- Seiseidoudou (征星堂々) - Kaisei and Kitami Yusei.
- Soma Ghosting WIN (颯馬ゴースティングWIN) - Kaisei, Furen E Lustario, Nagao Kei, Leos Vincent, and Itsuki Sakyo. (During V祭協 a parody of VSaikyou match.)
- Team Moon (月組) - Kaisei, Shikinagi Akira, Seraph Dazzlegarden, and Sakaki Ness. (Collaboration team with VOLTACTION.)
- Group 24th (にーよんぐみ) - Kaisei, Sakaki Ness, Kitami Yusei, Tamanoi Nana, Shiga Riko, Kisara, Kozue Mone, Lunlun, Nanase Suzuna, Nagisa Trout, Saotome Berry, Sakayori Soma, and Kirara Tamako. (Group made of NIJISANJI Livers that debuted in 2024.)
- ★☆Four star elite☆★ (★☆四つ星エリート☆★) - Kaisei, Umise Yotsuha, Eli Conifer, and Hitotsubashi Ayato. (2025 NIJISANJI Ikamatsuri Splatoon tournament.)
Miscellaneous
- Kaisei shares his character designer with Hizaki Gamma of HOLOSTARS.
- His fan name cleverly combines the kanji 錠 (meaning "lock") and 連 (meaning "group" or "association"), reflecting his lore as a locksmith who operates quietly in a dark alley. It is a play on word for "regular customer" which normally written as 常連 (jouren).
- As shown on his 3D debut, Kaisei can play the drums.
Character and lore
- He took over the locksmith business, 'Kaisei,' from his grandfather.
- In his lore video, he had a small square box that he never succeed to open.
- In Naked's MV, it is hinted that he might be cursed.
More Info
Profile
A young man who runs a 'locksmith shop' quietly in a dark alley. From opening to closing anything, there is nothing he cannot handle. While always looking aloof, no one can actually fathom his true intentions.
2024
On 15 March, he reached 50,000 subscribers on his YouTube channel.
On 18 March, he reached 100,000 subscribers on his YouTube channel.
On 12 April he opened his membership.
On 15 April, he reached 150,000 subscribers on his YouTube channel.
On 26 May, The Official 3SKM LINE Stamp was released.
On 25 July, he reached 200,000 subscribers on his YouTube channel.
On 7 September, he had his first new outfit reveal.
On 12 September, 3SKM released a new original song "What's Up" composed by NA.ZU.NA to celebrate their half anniversary.
On 4 December, he had a 3.0 brush up stream for his VTuber model.
2025
On 7 January, he reached 250,000 subscribers on his YouTube channel.
On 21 - 23 February, he participated in NIJISANJI Fes 2025.
On 12 March, he celebrated his 1st anniversary on stream together with his groupmates at 3SKM's official account.
On 15 March, 3SKM released new original song "Naked" composed by NA.ZU.NA.
On 5 September, Kaisei debuted his 3D model for the first time.
On 29 November, 3SKM had their first 3D live.
On 7 December, Kaisei participated in Singing in the Rainbow tour in Seoul, South Korea.
2026
On 6 January, VOLTACTION and 3SKM held a collab concert livestream called "IMPACT" on YouTube. Near the end of their concert, 3SKM announced that their 1st mini-album, “Nighthawks” will be released on 29 April.
Identity
- Occupation: Locksmith
- Color: white
Live chat etiquette
- Common VTuber chat etiquette is summarised here: "VTuber Chat Etiquette"
- Refrain from calling him with "-chan" suffix as he hates it.
Media
- Kaisei's corporate profile on NIJISANJI website
- 魁星 / Kaisei【にじさんじ】 - YouTube channel
- @Kaisei_2434 - Twitter account
- 3SKM - 3SKM YouTube Channel
- @3SKM_INFO - 3SKM Twitter Account
- @3skm.info - 3SKM Instagram Account