白河夜船 (しらかわよふね しらかわよぶね) — being fast asleep (and totally unaware of what is going on around one)
白河夜船
し ら か わ よ ふ ね
し ら か わ よ ふ ね
し ら か わ よ ふ ね
Being fast asleep (and totally unaware of what is going on around one)
Know-it-all manner
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