真ま昼ひるの夢ゆめ

expression

daydream; waking dream

A set phrase meaning a dream or fantasy experienced while awake, often with a nuance of something unrealistic or fleeting.

• 彼かれは授じゅ業ぎょう中ちゅう、真ま昼ひるの夢ゆめを見みていた。

  He was daydreaming during class.