Seible

Associated pages

Seible (You are here) Gallery Discography

Seible
Basic Details
Original Name	セイブル
Nickname(s)	Sei-chan Seibelle (female alter ego) Ittan Sei (by Shu Yamino) Seible Jacob Nijisanji (by Kaelix Debonair) Sekaible (NIJIENchanted) Seiburu-kun (by Kaelix Debonair)
Debut Date	NIJISANJI: 2025/03/15
Character Designer	Nana Tetra
Affiliation	NIJISANJI EN
Media
Channel	YouTube
Social Media	Twitter
Official Website	nijisanji.jp
Personal Details
Gender	Male
Birthday	3 October
Height	176 cm (5'9")
Zodiac Sign	Libra
Fan Name	Seinyans
Emoji	💎👔

Seible (セイブル) is an English-language Virtual YouTuber affiliated with NIJISANJI EN, debuting as part of the unit "BY THE BEAT" (バイ・ザ・ビート) alongside Zeal Ginjoka, Freodore, and Kaelix Debonair.

Introduction Video

【Debut】Number 1 Promoter【NIJISANJI EN - Seible】

Debut Stream.

Profile

A bubbly and magnetic Promoter who brings people together and adores attention.

Personality

This section is incomplete. You can help by adding more information.

Appearance

Seible has short light brown hair with blue and magenta/pink highlights. He also has purple eyes with diamond shaped pupils, and two beauty marks on the lower part of his right eye. On his left ear, his earrings has a crescent moon, a stud earring and a huggie earring. On his right ear he only has a segment ring. His casual clothes consist of a jacket that's blened in silver and white, while being surrounded by various blue jewelries and laces. He also has a black shirt which coincidentally matches the same color as his gloves, a blue tie with a diamond shaped designs colored in a black and purple. On his neck, he wears a black choker with a small chain on the right side and a small diamond on the front. and two silver necklaces with three crescent and a diamond. Lastly, he also wears white pants, and black loafers with blue socks.

History

Background

Seible's YouTube channel was created on 4 March 2025, and his Twitter in February 2025.

On 13 March 2025, NIJISANJI announced the 11th wave "BY THE BEAT" consisting of Seible, Zeal Ginjoka, Freodore, and Kaelix Debonair. Seible's first tweet was made on 13 March 2025.

Debut

On 15 March 2025, Seible debuted on his YouTube channel, and was the first member to debut.

2025

On 25 March, Seible reached 100,000 subscribers on his YouTube channel.

On 29 March, Seible opened his membership feature on his YouTube channel.

Mascot and Fans

• Seible's fans are called Seinyans.

Relationships

• "BY THE BEAT" (バイ・ザ・ビート) - Seible, Zeal Ginjoka, Freodore, and Kaelix Debonair. These four debuted together.
• "Chopcon" - Claude Clawmark, Ryoma Barrenwort, and Seible. They are a trio unit that plays fps games together (mostly Apex Legends); the name is a reference to one of Claude's food tweets.
• "NyanCrew" - Vantacrow Bringer and Seible. They are a cooking duo for the Minecraft Cook-off Showdown for Lazulight's 4th Anniversary.

Quotes

• "Welcome to opening night!" - Debut Trailer
• "I'm just a chill guy and I work here."
• "This is a safe space. Sort of. Not really. I mean, it's like a somewhat safe space. I mean, there could be safer spaces, like in therapy or something."
• "Okay, hear me out..."
• "THAT'S CRAZY!"
• "Slip a load in him but he said no :( cheese"

Trivia

• Color: #0A44AA
• He is one of the first NIJISANJI EN members to debut without a surname along with Freodore.
• He can speak both English and Japanese.
• Similar to Freodore, he is also colorblind, albeit slightly.

Likes and Dislikes

• Likes: My Senpais, Tea & Honey, Arts & Crafts, Leather Goods, Shiny Objects, Singing and Voice Acting, Idols and Anime, Rain & Snow, Ramen, Sushi, and Pasta, You (only if you subscribe), Reading an Amazing Book
• Other Likes: Pineapple on Pizza, Gumi, Takenoko -> Kinoko, Energy Drinks, Cookies & Cream Ice Cream.
  • Anime: Code Geass, Overload, D Gray Man, The Apothecary Diaries, Fullmetal Alchemist: Brotherhood, Summer Time Rendering, Death Note, Full Metal Panic! Fumoffu, Hunter x Hunter, Uramichi Onsen, Charlotte, 86, Demon Slayer: Kimetsu no Yaiba, Naruto
  • Games: Monster Hunter, Apex Legends, Marvel Rivals, Valorant, Animal Crossing, Left 4 Dead 2, Uno, Grand Chase, Ragnarok Online, Final Fantasy Series, Super Smash Bros Brawl, Pokemon, Mario Games, League of Legends

• Dislikes: A Lonely Stage
• Other Dislikes: Veggies, Old Elevators, &*&#$# on by a Cicada, Touching Grass, Going Outside, Direct Sunlight, Networking, Jumpscares, Fried Fish, Losing 1 sock in the laundry room on a random Tuesday.

Miscellaneous:

• His goals are singing on stage, voice acting, appearing on a billboard ad, having his own 1/7 inch figure, making lifelong friends, and contributing to a billion smiles and more.
• He uses boku when referring to himself in Japanese.
• He's currently the only BTB member that can drive.

External Links

Media

• Seible's corporate profile on NIJISANJI website
• Seible【NIJISANJI EN】 - YouTube Channel
• @Seible_2434 - Twitter/X Account

Hashtags

• #Seible - General
• #Seiblue - Fan art
• #Seiyouloveme - NSFW
• #SeeYouLive - Live Streams
• #Seilmysoul - Merch
• #Thumbneible - Thumbnails/Asset
• #Clipeible - Clips & Crafts
• #せいぶるみて - Egosearch

Further Reading

• セイブル - Unofficial NIJISANJI Wiki