Seible

Seible is a lively and bubbly person. In streams, he's shown to deeply care about his genmates while poking fun to get the group to chuckle.

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.

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.

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

• Seible's fans are called Seinyans.
• The Seinyans' fan chant is "nyan nyan".

• "BY THE BEAT" (バイ・ザ・ビート) - Seible, Zeal Ginjoka, Freodore, and Kaelix Debonair. These four debuted together. ** Media: YouTube | Twitter | Instagram | TikTok ** Hashtags: #BYTHEBEAT - General tag ** Emoji: 💓🎤 ** Fan Name: HzBeat ** "Moonshine" - Seible and Zeal Ginjoka. ** "Blood Moon" (赤月, AkaTsuki) - Seible and Freodore. ** "Honeymoon" - Seible and Kaelix Debonair (suggested first by Kaelix). * "Chopcon" - Seible, Claude Clawmark, and Ryoma Barrenwort. 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" - Seible and Vantacrow Bringer. They are one of the cooking duo for the Minecraft Cook-off Showdown for Lazulight's 4th Anniversary. * "Team HOPCON" - (not to be confused with the term Hopcon) is a group consisting of Seible, Kuga Leo (leader), Claude Clawmark, Shu Yamino, and Nayuta Umbrage who competed in the 2025 TGS Valorant Cup tournament with DubsteP as their coach. * "Soju Boys" - Soju Grape (Nayuta Umbrage), Soju Coconut (Alban Knox), Soju Pineapple (Vezalius Bandage), Soju Blueberry (), and Soju Peach (Seible) with Joe-mane (Altus Zendoji) as their manager. They are a boy band in the DistrictV roleplay server. * "Jimmy's World" - Unharmonized Bovine Jimmy of the Great Fossil (Vox Akuma), Dread Pirate Jimmy One Eye (Elira Pendora), Jimmy Bogos from Uranus (Ren Zotto), Pemperor Jimmy Flipper Hands (Petra Gurin), and Jimmy Jeible Jimmysanji (Seible). One of the four teams for the NijiENroute Mario Kart World Cup 2026. They won the Team Match round.

• Color: white
• 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: 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.

• 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. * Seible used to be a teacher. * He's currently the only By The Beat member that can drive and has a driving license. * He has an open water scuba diving license. * He has protanomaly, a form of red-green colorblindness. ** He sees the pink in his hair as light blue but can see the vibrant pink in his tie.

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