Good afternoon! Later this year, we will be visiting Osaka, Japan for a week. This travel itinerary is set. We'd like to add some other destinations on to this trip.

We'd like to fly from Chicago to Tokyo - stay for a few days - then take the bullet train to Osaka for our visit to Osaka/Kobe area. We would like to leave from Osaka and go to Hawaii for a few days/week, then fly back to Chicago.

I'm not sure how to book these flights. Would these all be one way tickets? Would I do some kind of multi-city combination? Any tips you can provide would be greatly appreciated. All the travel agents in my area mainly specialize in cruises so I haven't contacted one. If there's a way to find someone that would specialize in this kind of trip, I'd be glad to consult with them.

I appreciate anyone who can share some expertise. I try to be a savvy traveler but I'm having trouble with this one! Thank you!