Versatile to use for sketching, practicing calligraphy, and taking notes. This is a refillable brush pen, a classic Japanese brush pen. Dual design for varied expression: the soft brush tip combined with a fountain-pen style holder enables a wide range of artistic effects, from delicate brushwork to Japanese calligraphy styles and refillable watercolor brush pens. Smooth writing experience: piston mechanism delivers steady ink flow; strokes are fluid and comfortable for everyday use. Transparent body allows easy ink level monitoring. Brush pen advantages: experience traditional brush lettering while enjoying the consistency and control of a fountain pen in one versatile tool, suitable for watercolor pencils and water brush pens. Use scenarios: - In a journal: quick sketches, shading, and expressive lettering. - Practicing kanji or kana with varied stroke weight and finesse. - Mixed-media projects that combine ink lines with watercolor pencils and water brushes.