Having lived in Hawaii I can say the food and atmosphere are legit.  Definitely not a chain place..and they have a lot more on the menu the other Hawaiian BBQs such as malasadas and poke.  We really liked the Katsu, Kailua Pork and Kalbi plate lunches with all fixings.  We've already been back within the same week after our initial visit.  Solid local grinds..can't wait to check out the luau.