N5 — outside your level filter
の
のnoN5casual
All examples4
explaining — the sentence accounts for something the listener can already see
ちょっと頭が痛いの。
chotto atama ga itai no.
It's just that I have a bit of a headache. casual
明日から出張なの。
ashita kara shutchou na no.
I'm away on a business trip from tomorrow, you see. casual
asking after it — the same ending, said with rising pitch
どこ行くの？
doko iku no?
Where are you off to? casual
もう食べたの？
mou tabeta no?
You've eaten already? casual