いろんなフォントで「barrel_knot」変換
Zen Old Minchobarrel_knot
Yusei Magicbarrel_knot
M PLUS 1barrel_knot
Shippori Antiquebarrel_knot
Yuji Maibarrel_knot
Dela Gothic Onebarrel_knot
DotGothic16barrel_knot
Train Onebarrel_knot
Hira Minchobarrel_knot
Potta Onebarrel_knot
Reggae Onebarrel_knot
Stickbarrel_knot
Zen Kurenaidobarrel_knot
Kosugi Marubarrel_knot
Rampart Onebarrel_knot
Hachi Maru Popbarrel_knot
New Tegominbarrel_knot
RocknRoll Onebarrel_knot
Kaisei Decolbarrel_knot
「barrel_knot」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
