Sailor Fountain Pen YOI (Evening) SEKI Approximately half the ink remains. - Color: Dusty pink, with hints of green appearing when the ink pools or is diluted with water. From the official website: [YOI (Evening)] The time when the sun sets and the crescent moon appears. [Wavering Ink] This ink allows you to see different colors in shading and bleeding, and the colors change depending on the time and the paper used. Conventional products mainly used special paper to achieve color changes, but "Wavering Ink" allows you to enjoy the changes even on general-purpose high-quality paper. Different expressions appear depending on the paper used and the passage of time, so it is a new ink that allows you to enjoy a wide range of "wavering" color changes, not only as a fountain pen ink, but also with dip pens and glass pens.