いろんなフォントで「black knot」変換
Zen Old Minchoblack knot
Yusei Magicblack knot
M PLUS 1black knot
Shippori Antiqueblack knot
Yuji Maiblack knot
Dela Gothic Oneblack knot
DotGothic16black knot
Train Oneblack knot
Hira Minchoblack knot
Potta Oneblack knot
Reggae Oneblack knot
Stickblack knot
Zen Kurenaidoblack knot
Kosugi Marublack knot
Rampart Oneblack knot
Hachi Maru Popblack knot
New Tegominblack knot
RocknRoll Oneblack knot
Kaisei Decolblack knot
「black knot」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
