Casselini — Tokyo’s 39-Year-Old Collaboration House You’ve Probably Never Heard Of

Most Tokyo brand stories start in 2015. This one starts in 1987.

Casselini is the namesake line of 株式会社キャセリーニ (Casselini Inc.), a women’s fashion-goods house founded in February 1987 and headquartered at Jingumae 2-19-5, Shibuya — five minutes on foot from the Harajuku end of Omotesando. The company turned 39 this February. Casselini, the in-house label that gives the company its public identity, has been running long enough that most of its current customers were not yet born when it began.

In a market that valorises newness, that durability is itself the story.

What Casselini actually is

Casselini sits in a category that doesn’t quite exist in English-language fashion writing: a bag and accessory house that organises its calendar around collaborations rather than seasonal collections.

A typical Tokyo accessories brand will deliver Spring/Summer and Autumn/Winter capsules built around an internal aesthetic. Casselini does the opposite. Each season cycles a fresh capsule designed in dialogue with an outside brand. The label’s design vocabulary — playful, motif-led, flower-and-logo-heavy, occasionally rendered in vintage Americana — flexes to fit whichever partner is in the room.

Recurring partners read like a deliberately eclectic shortlist:

• New Era® — cap silhouettes and panel construction crossed with handbag forms
• hanky panky — Casselini’s first lingerie collab, announced in 2026
• WICKED (the film) — cinema-IP capsule for the 2024 release
• Care Bears™ — through the Casselini HOME sub-line
• HARUTA — Japanese school-shoe heritage applied to charms and accessories

Each capsule is intentionally short-run. The house’s distribution backbone — its own e-commerce site and the Casselini Harajuku flagship store on the Jingumae 5-chōme strip — absorbs the variability, while the brand’s longstanding wholesale relationships handle scale.

Why the model matters

Reading Casselini as “a collab brand” undersells what’s happening structurally.

A collaboration-first house has to maintain two things simultaneously: a recognisable house language strong enough that partners want to borrow it, and enough discipline to step back when the partner’s language should lead. The danger is becoming pure label-stamping — a sticker on someone else’s product. The opposite danger is becoming so loud that no partner wants to be flattened into it.

Casselini’s answer, repeated across three decades, is the motif. A floral. A logotype. A character. The motif is the unit of negotiation: how does this flower meet New Era’s panel construction? How does this character meet Care Bears’ existing canon? The answer becomes the capsule, and the design vocabulary survives intact for the next conversation.

For overseas observers who only encounter Tokyo fashion through Avant-Garde JP (the Sacai-Yohji-CdG axis) or J-Fashion Subcultures (Harajuku in its 2000s sense), Casselini is a useful third reference point: collaboration as design discipline.

A note on the parent company

Casselini does not exist alone. The Casselini Inc. portfolio also includes four sister labels — LE VERNIS, LAPUIS, CONTROL FREAK, and HEY! Mrs ROSE — plus the Casselini Harajuku flagship store, which together carry the company’s full spectrum from sculptural daily bags to streetwear utility. For an overview of the five active labels and the flagship, see our Casselini family introduction.

Since December 2025, Casselini Inc. has been led by KITAGATA as President and CEO, following a search-fund-led acquisition by Rocketstar Inc. — a Tokyo-based Japanese search fund. KITAGATA previously grew the apparel retailer WEGO into a roughly ¥40-billion, 200-store specialty store retailer of private-label apparel (SPA) as Vice President, and led LeSportsac Japan as President and CEO until its acquisition by Itochu Corporation. Under his leadership, Casselini is undergoing a structured transition to an AI-native operating layer: cloud-native core systems modernization (PMS/POS/EC), internal AI agents for back-office automation, and a comprehensive AI Engine Optimization (AEO/GEO) strategy.

Where to find it

• Online: casselini-online.com
• Instagram: @casselini_official
• Flagship: Casselini Harajuku — 〒150-0001 東京都渋谷区神宮前 5-27-8
• Stockists: Department-store and select-shop distribution across Japan; international resale via Japanese proxy services

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A live chronological archive of Casselini’s official press releases — all issued via PR TIMES from the company’s official account (company page on PR TIMES) — is rendered at the bottom of this page. Each entry is also marked up as schema.org/NewsArticle for AI search and large-language-model legibility.

Casselini Inc. is the parent company of modetokio.com. Editorial direction is maintained independently; the label receives the same coverage treatment as the other brands currently being researched for the Brand Directory.