Founded by a calligrapher
Founded in Korea in 2016 by Ahn Dong Hyuk, a calligrapher. In 2018-19 they launched a literature-inspired ink collection (the Yun Dong-ju and Yi-sang Series). In addition to their inks, the company manufactures stationery such as fountain-pen friendly notebooks and swatch cards.
Some of their inks have additional ingredients to create shimmer. While my personal preference is to avoid shimmer inks I must say I an impressed with their attention to detail in terms of colour. The box included a small card that included a colour sample of the ink along with the RGB and Pantone colour codes. So if you think the ink does not look what you thought it would - check the colour card and the colour codes - that will be what they expected the ink to look like.
The line of ink is noted for some of the shading effects.
Website: www.wearingeul.com

Wearingeul ink comes in an attractive square, glass bottle with a black plastic cap. The bottle holds 30 ml of link. The bottle sits in a cardboard box with a colour label to reflect the ink. Inside the box is a unique feature. There is a small card with information on the colour of the ink - the name, a colour sample, and the RGB colour and Pantone colour codes.

Alexandre Dumas The Three Musketeers - is my first bottle of ink in the Wearingeul line of inks. This colour is part of the World Literature Ink series of which when I counted the available colours on their website - there were 74 colours.
The company links ink and literature. They describe The Three Musketeers as: colour, shading | Alexandre Dumas - Set in the 17th Century France, the ink captures the journey of D'Artagnan and his companions as they become true musketeers. A deep navy base with a subtle green sheen reflects the story of a young man who upholds truth and honor amid political intrigue, betrayal and power struggles. Doesn't that just make you want to read the book! In my use so far the colour is a dark grey and I have not seen the deep navy blue or green in my writing. It will be interesting to see if those colours come out as different nibs ae used. The colour codes when entered into a program such as Adobe Photoshop come out as a grey. So I am not too sure how valuable the codes are. The ink colour sample on the card has the navy colour showing.
My experience so far is good. Smooth flow. Good consistent colour tone. No feathering. Reasonable dry time.