No, but people can join your game anytime.

And open blue chests... I found it to be quite awkward though

Oh, okay. So you could play offline single-player like any previous DQ entry then. I see. So DQ X will be online only?

I've read that it has an offline part at the beginning, then it becomes online.

Btw, I think this is relevant, FE had a 81.63 sell-through, and Code of Princess 72.62%. Not bad, not bad at all for both games.

Source.

Certainly! I mean, anything above 70% is very good, because it means it probably sold-out in a fair few places. CoP was obviously just stupidly under-shipped.

@Bolded

Not sure if intentional...

The following weeks will be interesting because of the Golden week.

Definately not intentional, and I really need to get that game.