Help I had an unsuccessful delivery to a shipping company

i have orderd from south korea and i used shop and ship address here in japan and it seems like they have days off?! anyway my package was out for delivery today but since it's their day off the delivery was unsuccessful the thing is what's going to happen now? Are they gonna deliver it again or not? And i want to contact the Japan post but they only have local contact! and I know no one there. is my shipment will be lost?

You have to take this up with the forwarding company, but it would be normal procedure to re-deliver after prior arrangements. This is a long weekend here in Japan (Monday being a public holiday), but there should be someone to contact at their office.

The normal procedure for failure to deliver in Japan is that you get a card in your letter box telling you that they were unable to deliver, and you can phone a free number to arrange a convenient delivery time. If you didn't get such a note, then maybe they didn't deliver and it's best to wait a day or two.