The background behind this game is a little serpentine and strange, but the original Pro Golfer Saru was a manga done by Fujiko/Fujio, the team behind Doraemon and other extremely popular Japanese comics. The basis of the story has Saru (Japanese for 'monkey') aiming to become the best golfer in the entire world. Please, do not ask me why a human/chimp hybrid is trying to achieve this not all that wonderful goal; I haven't actually read this yet.
Anyway, in order to achieve this goal he is undergoing training from a mysterious masked man, together with this weird kung-fu practicing guy who is Player 2 in this game.. (This is part of the reason why I enjoy manga; it's a change of pace. No editor in the US or Europe would even think that this crap can actually sell... and it probably can't except in Japan...)
The first nine holes were constructed around what seems to be a typical golf locale at first glance - there's a fairway here, a bunker over there, some water - but once things get into action you'll begin to notice why life is so hard for our hero Saru. In the first and later holes, there are bottomless pits everywhere that act as OB areas if you over or undershoot the islands of land that hold the fairway and green. Tornadoes swallow your ball and bring it back to you, and crows do whatever they want with your ball if you hit them.. sometimes good things and sometimes bad. Also, the masked dude has installed weird fountains in the water hazards that reach up for your ball and pull it in! If you thought Greg Norman was a whiner before he'll probably have a nervous breakdown at the first tee of this course. By the way, pause and move the control pad around to see the entire hole.
Putting is quite a bit easier than, say, Nintendo's golf games - the green always slopes in only one direction. There are rocks, pits, moles and so on, but you can always spin the ball around them if you like. This game is hugely enjoyable for at least one go because it's so accessible (probably for the sake of the kids who read that manga) and so original in its treatment of golf.
This is beside the point, but there's a commercial on TV in Japan starring Tiger Woods navigating a golf hole in the Grand Canyon. He's on one mesa and the green is on another, and they're separated by a 90-degree corner. So he hits the ball, starts shouting "Hook! Hook!" and the ball magically goes 'fwoosh' and hooks 90 degrees, landing right in the hole. And then Tiger says "It's wonderful Wonda", because this is an ad for some canned coffee, you see. In any case, I wonder of Tiger got his inspiration from Pro Golfer Saru... come to think of it, wasn't his trainer a masked dude in a bad trench coat? I donno..