Sailor Yurameku Ink Bottle (Byakuya - 20 ML) 13-1529-203

Sailor Yurameku Ink Bottle (Byakuya - 20 ML) 13-1529-203

• Product Line: Sailor Yurameku (“????” = “to shimmer / flicker”) bottled ink series 

• Variant / Color Name: Byakuya (??) — literally “white night” 

• Reference / Product Code: 13?1529?203 

• Volume: 20?mL 

• Ink Type: Water?based dye (non?pigmented) 

• Bottle Material / Shape: Glass bottle, square cross-section, standard Yurameku series styling 

• Bottle Size (External): ~?W34 × D34 × H58?mm 

• Filled Weight: ~94.0 g 

• Package / Box Dimensions: ~?37.5 × 37.5 × 61?mm 

Color Behavior & Optical Properties

• Dual?shading / Shifting Effect: As with the Yurameku line, the ink exhibits “color shifts / shimmering / nuance changes” depending on time, paper, and saturation. 

• Color Transition / Theme (Byakuya):
   ?• Byakuya evokes the idea of summer nights when the sky doesn’t fully darken (“white nights”). 
   ?• The ink is described as shifting from a pale green toward delicate violet as it dries. 
   ?• In its more saturated or thicker strokes, it may display violet / purple undertones, while in lighter strokes, a greenish or grayish tone might dominate. 

• Dominant / Base Tone: Many sources list the dominant visual as gray / silver / muted tone with shifting hints of green / violet. 

• Shading / Sheen / Shimmer:
   ?• The ink offers strong shading / tonal variation across strokes. 
   ?• Sheen is reported (i.e. reflective edges under light) but no shimmer / no glitter particles 

• Water Resistance: Not water-resistant; exposure to water will cause smearing / color loss. 

Performance & Use Characteristics

• Flow / Lubrication: The ink flows smoothly; it's not marketed as especially lubricated. 

• Dry Time: Moderate, depending heavily on nib size, paper absorbency, and ink load. 

• Compatibility: Safe for use in all fountain pens (converters, piston, etc.) when cleaned regularly. 

• Maintenance / Behavior: Because of its shifting / multi-tone nature, results can vary substantially with paper type, nib width, and ink saturation. On lighter or fast-drying papers, the color transitions may be more subtle. 

• User Observations / Notes:
   ?• Some users note that in fine nibs or “drier” pens, the color shift might be less visible; bolder or wetter nibs allow more of the nuance to emerge. 
   ?• Because of the “shimmer / shifting” nature, some consider Yurameku inks “play inks” — fun and experimental, but more sensitive to usage conditions than typical inks.