[ぷち屋 (ほしのふうた)] かぶると石コロのように気にされなくなるボウシ (コピー本)(ドラえもん)

[Puchi-ya (Hoshino Fuuta)] Hat Which When Worn Makes Wearer Go Unnoticed Like a Roadside Pebble (Copybon)(Doraemon)