いろんなフォントで「old_style」変換
Zen Old Minchoold_style
Yusei Magicold_style
M PLUS 1old_style
Shippori Antiqueold_style
Yuji Maiold_style
Dela Gothic Oneold_style
DotGothic16old_style
Train Oneold_style
Hira Minchoold_style
Potta Oneold_style
Reggae Oneold_style
Stickold_style
Zen Kurenaidoold_style
Kosugi Maruold_style
Rampart Oneold_style
Hachi Maru Popold_style
New Tegominold_style
RocknRoll Oneold_style
Kaisei Decolold_style
「old_style」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
