いろんなフォントで「serial_operation」変換
Zen Old Minchoserial_operation
Yusei Magicserial_operation
M PLUS 1serial_operation
Shippori Antiqueserial_operation
Yuji Maiserial_operation
Dela Gothic Oneserial_operation
DotGothic16serial_operation
Train Oneserial_operation
Hira Minchoserial_operation
Potta Oneserial_operation
Reggae Oneserial_operation
Stickserial_operation
Zen Kurenaidoserial_operation
Kosugi Maruserial_operation
Rampart Oneserial_operation
Hachi Maru Popserial_operation
New Tegominserial_operation
RocknRoll Oneserial_operation
Kaisei Decolserial_operation
「serial_operation」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
