いつ来るの

when are you coming?

→ いつ

phrase Rare #27,653

when are you coming? The subject is often omitted, so the question can also mean “when is it coming?” The sentence-ending の gives the question a casual, conversational tone.

JA: 明日、いつ来るの？

EN: When are you coming tomorrow?

いつ来るの、ここに？

When are you coming here?

サンタさんって、いつ来るの？

When does Santa come?

バスはいつ来るの？

When is the bus coming?

いつ来るの？

When are you coming?

— グッドフェローズ (1990)