Sailor Yurameku Kokoroguma is a mysterious blue-black ink that shifts dramatically: dark navy blue at a glance, with red sheen under light, green undertones while writing, and black from a distance. Known for its color-changing properties depending on paper, time, and angle, it offers medium shading and sheen without being overly saturated. It suits fountain pen enthusiasts seeking versatile, well-behaved ink for daily use on various papers.
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Reviews & Resources
Sailor Yurameku Series 2 Inks - Mountain of Ink
Expert review comparing all five Yurameku Series 2 inks including Kokoro Guma, with detailed swabs, writing samples, dry times, water resistance, feathering, and sheen analysis.
Ink Peek: Sailor Yurameku Inks, Round 2 - The Well-Appointed Desk
In-depth analysis of Yurameku 2 inks examining color-shifting properties, dye composition, sheen characteristics, and performance variations across different paper types like Tomoe River and Cosmo Air Light.
Sailor - Yurameku II | Kokoroguma Ink 20ml - Pen Venture
Product resource highlighting how Yurameku inks display different colors on various papers and under different lighting conditions, emphasizing the color-changing characteristics.
Sailor Yurameku 2nd Edition Date Gokoro Ink Review
Comprehensive review of Sailor's Yurameku 2nd Edition inks, discussing color-changing properties, shading characteristics, and performance on different paper types with detailed writing samples.
Sailor Yurameku Inks, Season 2 - Wonder Pens
Detailed review of Sailor Yurameku Season 2 inks with swab comparisons showing wet versus dry color transformations and personal impressions of each ink in the collection.
Sailor Yurameku Kokoroguma - 20ml Bottled Fountain Pen Ink
Product information page for Sailor Yurameku Kokoroguma ink describing it as a smooth-flowing water-based dye ink formulated for safe use in all fountain pens.
Ink details on this page were generated with the assistance of AI and may not be fully accurate.