If you are looking to shop there are still a few good small shops left in the centre of town if you scout about and then there are three shopping centres and a big discount department store. At these you can pretty much find anything that you want, hence the demise of the small shops in the centre of town. I should really say need, as you will probably not find the western foods you are looking for in their supermarkets! Actually since I have been here, much of the town centre has been or is in the process of being rebuilt and looks much better now.
Affranchire
One of the best shops if you want to buy some trendy stuff for your house or clothes, and pay a bit more, is Affranchire. They even sell Dad's Root Beer! (if you've always wondered what root beer tastes like I would say it tastes like aniseed). They have a few western snacks too.
Omiyage
The main omiyage shop is on Route 10. This is also the place were they make the only authentic Go stones in Japan. They sell various local produce like Hyuganatsu (a type of yellow orange that has a thick pith that you can also eat), Hyuga souchu, various sembe made from Hyuganatsu, and loads of other Japanese style snacks.
The shopping centers are pretty straightforward. They are all pretty similar carry almost anything/standard items you need.
Jusco and Co. (A.K.A. ROC town)
I think the most popular one has to be the infamous Jusco. At this shopping centre you will of course find Jusco, which has pretty much everything from clothes, shoes, food, kitchen equipment, household goods, camping equipment, massage chairs, electrical goods, music, a holiday shop, a jewellery shop, opticians, and the standard food court with McDonalds, KFC, Ringer Hut, etc. It is not as big as the Jusco in Nobeoka. Also at this shopping complex you'll find a D.I.Y. shop, a 100 yen shop, a stationary shop, a music/book shop, another travel shop, a game center, and a few restaurants as well. There is also shop called shoe ExpressE this is the only place in town that has a few larger sized shoes! (over Japanese size 28)
Mr. Max
If you are looking for cheap things this is the place to come. In the actual shop Mr. Max you can buy anything from clothes, tools, electrical goods, household goods, camping, sports goods and some food. I would say that this is the cheapest place to buy anything you want (providing they have it!). The same goods in the likes of Yamada Denki and other shops are almost always cheaper at Mr. Max. Inside Mr. Max is a McDonalds (not a scratch on Mos Burger) and an opticians.
Also at Mr. Max you'll find a cheap clothes shop, a Daiso ¥100 shop, a Co-op supermarket (Co-op often has more local products and some better products than most other supermarkets), another clothes shop that also sells bags and suitcases, game center, Co Co Curry restaurant, a Yaki niku and ramen shop and the only MR. DOUGHNUTS IN TOWN! Oh, there is also a game center and cash machines for the usual Miyazaki banks.
Homewide and Umekoji
Homewide is a big D.I.Y center and the best D.I.Y. center in Hyuga. It's got all the D.I.Y. stuff you should need as well as camping, house hold goods, electrical, gas cookers, swimming and beach stuff, etc. Next to Homewide is Umekoji. Umekoji is pretty much average on the Japanese supermarket scale but it does have a very good and vast fresh fish section. Also at this site there is a Mos Burger (way better than McDonalds, but more pricey), clothes shop, pharmacy, cleaning shops (they are every where) and another game center, but this one also has an indoor batting cage. There is also the standard cash corner, but this one is usually open till 9pm week days, maybe 8pm Saturdays and 7pm Sundays.
24 hr Trail
Trial is a 24 department store. The building used to be a Kotobukiya department store but closed down and reopened as Trail. Trail has many good points, but it lacks on the cosmetics (I don't mean make up). Good points about it are: it's open all the time, it pretty much everything from cheap fishing and outdoor goods to cheap clothes, the supermarket is cheap, parking is cheap (free actually, and thus convenient for parking at and walking the 50 meters to the train station, if such a journey is required), it sells cheap house hold goods and everything else is cheap too. So as a result of the cheapness it currently lacks cosmetic appeal. It still has broken tiles outside it and there was a dead bird for most of the first year in a front window section that was blocked off from the rest of the shop. The bird has since gone and the section is now included in the cafe area. It's current toilet facilities don't much the usual high standard of most department centers.