ISEKAIJOUCHO

Overview

ISEKAIJOUCHO is a virtual singer and creator from KAMITSUBAKI STUDIO, and a member of V.W.P. She stands out for treating singing as only one part of a broader expressive practice that also includes illustration, narration, and character-driven atmosphere.

Among the Kamitsubaki members, she is one of the clearest examples of an artist who feels like a world unto herself.

Role and Creative Position

The official label “virtual dark singer” captures more than genre. In ISEKAIJOUCHO’s work, darkness, fragility, mystery, and authorship are tightly bound together. Her songs often feel less like isolated tracks and more like fragments of a larger inner setting.

That makes her an important hybrid figure inside Kamitsubaki: not only a singer, but also a one-of-a-kind creator whose identity extends through image, voice, and narrative tone.

Basic Profile and Character Setting

ISEKAIJOUCHO retains the old-form character “ヰ” in her name as part of her visual and textual identity. Her public design uses ivory hair, heterochromatic eyes, hair covering one eye, gloves, a coat, and recurring flower imagery. “Universal Form” is the common everyday form; Anemone, Heliotrope, Yatagarasu, and other forms belong to particular stages and narratives.

Forms, Setting, and Anecdotes

Drawing is part of ISEKAIJOUCHO’s public creative practice, not merely an accessory to singing. Comments about music, films, games, pets, food, and hobbies should remain in interview or programme context. SEKAI must be kept separate from ISEKAIJOUCHO as a voicebank and character.

Companion: the Anemones “anemos”

The two anemones beside ISEKAIJOUCHO are named anemos, from the Greek word for “wind”.

• Why the name: Greek ἄνεμος means “wind”, and the anemone’s genus name Anemone shares the same root; folklore holds that anemones open only in the wind.
• Where it sits: like KAF’s Laplace and RIM’s Hastur it belongs to the witches’ “companion” system, though its form is a pair of flowers rather than a single creature.
• Echo in the world: the image of wind runs through her singing as well — her breath control is often described as “wind passing through a flowerbed”.

Activity History

2019

• December 9: Uploaded her first teaser video and announced the start of her activities.
• December 12: Released her first cover song, “Yogao no Kokaku” (夜顔の告白).

2020

• February 23: Released her first original single, “Story’s Waltz” (物語りのワルツ), composed by samayuzame.
• April 27: Released her second original single, “Diorama Drama” (ジオラマドラマ), composed by samayuzame.
• July 16: Released her third original single, “Hydrangea” (ハイドレンジア), composed by toucasa.
• September 26: Released her fifth original single, “Endless White Feeling” (とめどなき白情), composed by harumakigohan.
• December 26: Held her first cover live “Candy Live” (キャンディライブ). Following the live, she released her seventh original single, “Heart of Sirius” (シリウスの心臓), composed by Tota Kasamura, which became one of her signature songs.

2021

• March 13: Officially debuted as a member of the virtual artist group V.W.P (Virtual Witch Phenomenon) during KAF’s 2nd ONE-MAN LIVE “Fukakai Ni Q2”, announcing the group’s formation.
• October 23: Held her first 3D virtual solo concert (1st ONE-MAN LIVE) “Anima”. On the same day, she announced the production of her 1st album Sousei (創生) and the development of her musical isotope “CeVIO AI SEKAI”.
• December 8: Released her 1st album, Sousei (創生).

2022

• April 29: The musical isotope “CeVIO AI SEKAI” (星界), developed based on her singing voice database, was officially released.
• July 17: Jointly held the virtual concert “Singularity Live Vol. 1” with Rim, and revealed their collaboration single “Pandora Call” (パンドラコール).
• September 10 – October 10: Held her first solo art exhibition, “ISEKAIJOUCHO Exhibition” (ヰ世界情緒展), in Tokyo.

2023

• January 14: Held her second cover live, “Candy Live 2” (キャンディライブ2).
• June 18: Held her 2nd ONE-MAN LIVE “Anima II -Kamitsubaki City 3rd Avenue-” and unveiled her new 3D model “Fuben-tai” (普遍体).
• December 9: Announced the production of her 2nd album, Shikisai (色彩), during her 4th anniversary livestream.

2024

• March 27: Released her 2nd album, Shikisai (色彩).
• August 7: Held her first physical solo concert (3rd ONE-MAN LIVE) “Anima III” at Pacifico Yokohama National Convention Hall.
• August 13–15: Performed as a member of V.W.P in the debut of KAMITSUBAKI STUDIO’s growing virtual stage play Otogibanashi (Sen).

2025

• February – March: Held her second solo art exhibition, “ISEKAIJOUCHO Exhibition II” (ヰ世界情緒展Ⅱ), in Tokyo and Osaka.
• September 25 – October 26: Held her first overseas exhibition, the “ISEKAIJOUCHO Exhibition” Shanghai Special Exhibition.

2026

• February 25: Released her 1st E.P., Genshiroku (幻視録).
• March 19: Released the virtual idol training adventure game Virtual Ties Isekaijoucho Musoukyoku on Steam, which she produced and starred in.
• March 25: Held a special livestream celebrating 500,000 subscribers on her YouTube channel.
• May 1–2: Held her first 2DAYS LIVE (DAY-1 “Flower Closet” / DAY-2 “Anima Re:birth”) at Zepp Haneda.

Discography, Live Performance, and Collaborations

“Monogatari no Waltz”, “Diorama Drama”, “Hydrangea”, “Tomedonaki Hakujō”, “Artificial Flower”, and “Sirius no Shinzō” form the early solo line. Sōsei, Shikisai, and Genshiroku document later stages. The CANDY LIVE cover series, Anima lives, Singularity Live with RIM, V.W.P songs, and the 2026 Flower Closet / Anima Re:birth programme reveal how singing, drawing, character work, and worldbuilding operate together.

She also takes multiple roles in Virtual Ties, including character source, visual creator, and singer. orie, reoen, samayuzame, toukasa, and Harumakigohan are among the creators associated with different parts of the catalogue.

Voice Acting Roles

Yogawa Sekai is ISEKAIJOUCHO’s corresponding character within the KAMITSUBAKI CITY setting, and the most classical and serene of the five witches.

Exhibitions and Art Projects

• ISEKAIJOUCHO Exhibition: a solo exhibition centred on illustrations, song art and world-building visuals — a rare “visual-archive-first” physical exhibition in the KAMITSUBAKI system that lays out the orie design lineage and the evolution of her own aesthetic.
• Stage play “Otogibanashi (Some)”: a theatrical adaptation of the audio-drama world; because its costume system is separate from her everyday singing forms it is excluded from the form lineage.
• Artistic position: ISEKAIJOUCHO is the member most closely tied to painting, literature and classical art, and her projects regularly push past music into exhibition and theatre.

Live Performance Archive

• ISEKAIJOUCHO STREAMING COVER LIVE “Candy Live” series: cover-driven online streaming shows, followed by “Candy Live 2” — her most continuous outlet outside solo concerts.
• ISEKAIJOUCHO 1st ONE-MAN LIVE “Anima”: a two-day structure (Day 1 / Day 2) themed on the soul (anima), fully integrating her classical world-view with 3D stage production.
• ISEKAIJOUCHO Mini-Live “parallel canvas”: a small experimental show exploring painting and music running in parallel.
• ISEKAIJOUCHO 2nd ONE-MAN LIVE “Anima II -Kamitsubaki City Sanban-gai-”: continues the “Anima” series while naming itself after a district of KAMITSUBAKI CITY, tying directly into that project’s district system.

Representative Works and Related Entries

Complete Singing Form Archive

ISEKAIJOUCHO’s visual system is the most elaborate in V.W.P. It takes flowers as its core motif and is led by the illustrator orie.

How the forms are used: across her channels, avatars, backgrounds and collaboration key visuals are all in the universal form, and most song illustrations use it too; the mutant forms can be roughly described as live-show only. Costumes from the stage play “Otogibanashi (Some)” belong to a separate lineage and are excluded here.

Universal Form · “Anemone”

• Anemone I / Anemone II are both designed by the illustrator orie.
• “Anemone” means the anemone flower, and the two anemones beside her are, by variety, “five-leaf anemones” — also called European anemones.
• The flower-familiar?‘s name is anemosアネモス, from the Greek word for “wind”.

What the lineage means: the three tiers of “universal form (flower) → mutant (altered flower) → thought-form (sublimated)” are not mere costume changes but a complete morphological fable, mapping precisely onto the themes of growth, mutation and transcendence that run through her work.

Musical Isotope “SEKAI”

Musical Isotope 星界せかいSEKAI is the AI singing synthesizer developed from ISEKAIJOUCHO’s voice, and a core member of KAMITSUBAKI’s Musical Isotope series.

Relationship to the template: SEKAI is not merely a “voice bank and its performer”. The studio positions it as the digital-side isotope of the same singing voice, sharing the identity of a “song singularity” within the lore.

Anecdotes and Community Culture

• Form as narrative: ISEKAIJOUCHO has the largest and most systematically named form catalogue in V.W.P (all flowers); the three tiers of universal, mutant and thought-form interlock with the themes of her work.
• Taking up the pen: the 2025 thought-form “Seventh Heaven” was the first time she designed one of her own forms and wrote its lyrics, marking a further expansion of her creative authorship.
• Interaction: she is close to HARUSARUHI — the aquarium HARUSARUHI said she wanted to visit after coming of age is the one she later visited together with ISEKAIJOUCHO.
• Vocal label: her voice is often described as “baroque splendour wrapping a girl’s fragility”, and she carries the most “otherworldly / fantasy” arrangements in V.W.P.

Related Projects / Setting

ISEKAIJOUCHO connects V.W.P, the musical isotope SEKAI, and the Kamitsubaki City family of projects. Her importance comes from how naturally she layers singer, character, and creator into a single identity.

References

• KAMITSUBAKI STUDIO official artist page: https://kamitsubaki.jp/artist/isekaijoucho/
• KAMITSUBAKI STUDIO official V.W.P page: https://kamitsubaki.jp/artist/v-w-p/
• Chinese Wikipedia: V.W.P: https://zh.wikipedia.org/wiki/V.W.P

External Links

• Official Website
• YouTube(Main)
• X (Twitter)
• TikTok
• piapro
• bilibili