As you can see from the image on the bottle, there are some characters which do not resemble English at all. Yes, it is a Japanese made ink brand Kuro Sumi which is created organically and vegan friendly. It is named to honour a clan of elite warriors in Japanese. They were all marked in black ink in jaw line and abdominal area. The special formulas are handed down for centuries to memorize their loyalty and braveness. That is why it is especially popular for its black outlining ink in the modern days.