いろんなフォントで「school_day」変換
Zen Old Minchoschool_day
Yusei Magicschool_day
M PLUS 1school_day
Shippori Antiqueschool_day
Yuji Maischool_day
Dela Gothic Oneschool_day
DotGothic16school_day
Train Oneschool_day
Hira Minchoschool_day
Potta Oneschool_day
Reggae Oneschool_day
Stickschool_day
Zen Kurenaidoschool_day
Kosugi Maruschool_day
Rampart Oneschool_day
Hachi Maru Popschool_day
New Tegominschool_day
RocknRoll Oneschool_day
Kaisei Decolschool_day
「school_day」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
