If you’re a stationery enthusiast hoping to scoop up the latest regional release from Kobe’s premier pen maker, brace yourself: the digital shelves are already bare.

Legendary Kobe pen institution NAGASAWA officially rolled out its newest limited-edition creation today, September 25: the Bitter Chocolate Fountain Pen. Released alongside a matching special-edition bottle of Kobe INK Monogatari “Bitter Chocolate,” the drop was designed to celebrate Kobe’s storied culture of Western confectionery and artisanal chocolate-making.

Limited edition Bitter Chocolate fountain pen featuring a pink gold trim and a cacao mark on the cap.

The limited edition Bitter Chocolate comes detailed with a pink gold tim and a "Cacao" mark on the pen cap

The problem? At the time of this writing, the pen is completely sold out on the official nagasawa-shop.jp web store.

A Confectionery Masterpiece in Resin and Gold

Built on a classic Sailor Pro Gear Slim silhouette, the Bitter Chocolate edition trades standard black-and-gold styling for an indulgent, bittersweet aesthetic.

Polished 14k pink gold fountain pen nib with intricate engravings on a dark resin body.

The pen's nib is handcrafted in Japan using high-quality stainless steel and a 14k pink gold finish

The body is turned from deep dark-chocolate-brown resin, paired with warm pink-gold-plated metal trim. Up top, the pen cap features an exclusive gold-embossed cacao pod motif rather than NAGASAWA's standard weathercock logo. Under the threaded cap, the pen carries a stainless steel nib finished with 14-karat pink gold, laser-etched with NAGASAWA’s signature weathercock and 1882 founding mark.

The pen also comes packaged with a dedicated 50ml bottle of Kobe INK Monogatari in "Bitter Chocolate"—a rich, espresso-tinged sepia ink formulated to mimic melted high-percentage cacao on the page.

Kobe INK bitter chocolate bottled ink with a matching color sample card on a white background.

This series' ink is a chocolate-inspired color that comes included with the pen

The Instant Sellout

Specialty Japanese fountain pen collaborations regularly trigger fierce competition among international collectors, but NAGASAWA’s limited runs are notorious for disappearing in minutes. For those who missed today's initial online drop, keeping a sharp eye on local Kobe brick-and-mortar stockists or secondary market listings is likely the only route left to secure a taste.

Product Specifications & Release Details

Product Name: NAGASAWA Fountain Pen "Bitter Chocolate" (NAGASAWA 万年筆「Bitter Chocolate（ビターチョコレート）」)

Release Date: September 25, 2026 (Pre-orders opened September 18, 2026)

Price: ¥17,600 (including 10% tax) / ¥16,000 before tax

Nib: Large Stainless Steel Nib (大型スチール) with Pink Gold plating, engraved with NAGASAWA's logo

Nib Sizes: EF (Extra Fine), F (Fine), MF (Medium Fine), M (Medium), B (Broad)

Finial (Cap Top): Custom gold "Cacao" pod motif

Trim / Accents: Pink Gold finish

Dimensions: Approx. φ18 mm × 129 mm (including clip); Barrel diameter: φ13 mm

Filling Mechanism: Sailor Cartridge / Converter dual-use (Converter sold separately)

Color Inspiration: Kobe INK Monogatari Special Edition "felissimo chocolate museum bitter chocolate"

Availability / Retailers: NAGASAWA brick-and-mortar stores, NAGASAWA Web Shop (nagasawa-shop.jp)