Pilot Iroshizuku Tsuki yo 15 ml Fountain Pen Ink

Pilot Iroshizuku Tsuki yo 15 ml Fountain Pen Ink

Pilot, a worldwide reference in premium writing instruments, introduces Iroshizuku Tsuki yo, a deep, elegant blue fountain pen ink inspired by the mysterious and serene beauty of Japanese full moon nights. The name Tsuki yo translates to “moonlit night,” evoking calmness, reflection, and a profound sense of harmony. This sophisticated ink shade brings depth and a hint of mystery to every word you write, transforming even everyday notes into a poetic gesture.

Created for writers, calligraphers, and professionals who expect a consistent, smooth, and premium-quality ink, the Iroshizuku collection from Pilot is recognized globally for its perfect balance of tradition and innovation. Tsuki yo features an advanced formula to ensure steady flow, quick drying, and excellent resistance to feathering or smudging, even on the finest fountain pen paper. Its stable performance guarantees clean, sharp lines with an elegant touch of character.

Concept and design

The Iroshizuku series celebrates Japan’s natural beauty through a carefully chosen palette of colors. Tsuki yo embodies the subtle blue of the night sky under a full moon, conjuring a sense of peace and quiet contemplation that enriches the writing experience.

Box contents

This product includes one 15 ml bottle of Pilot Iroshizuku Tsuki yo fountain pen ink, securely packed in an individual box for protection and style (pictures shown are for reference only; actual product may vary).

Technical features

• Color: deep blue inspired by Japanese full moon nights
• Volume: 15 ml
• Weight of the bottle: 77 g
• Product dimensions: 67 mm x 28 mm x 28 mm
• Individual package size: 70 mm x 30 mm x 30 mm
• Weight with packaging: 83.9 g (boxed)
• Compatible with most fountain pens
• Made in Japan

Brand history and philosophy

For more than a century, Pilot has been dedicated to blending Japanese tradition with technological innovation to produce writing tools of the highest quality. The Iroshizuku collection exemplifies this mission, offering an ink experience that combines cultural inspiration, refined design, and perfect performance for fountain pen lovers around the world.

Learn more

If you would like to explore the full Iroshizuku range of 24 colors, check out Pilot’s official presentation video here: see video.

“With Pilot, write your world in your own way.”