いろんなフォントで「irrational_number」変換
Zen Old Minchoirrational_number
Yusei Magicirrational_number
M PLUS 1irrational_number
Shippori Antiqueirrational_number
Yuji Maiirrational_number
Dela Gothic Oneirrational_number
DotGothic16irrational_number
Train Oneirrational_number
Hira Minchoirrational_number
Potta Oneirrational_number
Reggae Oneirrational_number
Stickirrational_number
Zen Kurenaidoirrational_number
Kosugi Maruirrational_number
Rampart Oneirrational_number
Hachi Maru Popirrational_number
New Tegominirrational_number
RocknRoll Oneirrational_number
Kaisei Decolirrational_number
「irrational_number」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
この漢字は何でしょう？？