MarlboroLi

You are asking about spending no more than 7,500yen on an evening meal.
If you were to go by train from Narita to Tokyo, this would be at least 2,000yen each for the return trip.

If you could take out your boss for LUNCH rather than the evening meal there are a whole assortment of world class restaurants where that money could buy you a truly memorable multi course menu. At dinner time... not so much.

From what you've requested here, a near $100 evening Japanese meal where you want to impress your boss, best use of time and money might be the 8,400yen 雅 （みやび pronounced miyabi）option on the dinner menu at
Kyouryouri Hanamura (which means Village of Flowers - Kyoto style cuisine)
http://www.nctv.co.jp/~hanamura/menu.html

It's just a little outside of Narita town. Copy and paste the next line into Googlemaps for a visitor friendly map:
千葉県成田市東町85-16 　

Here's the blog entry detailing a visit to this restaurant. The writer/photographer chose the 8,400yen miyabi option on the menu. So this is exactly what you'd get for your just over $100 x 2 investment.
http://www.k-weekend.com/hanamura.html