I honestly like it, it works perfectly, and looks nice. I've never messed with this kind of puzzle, but it's pretty fun. Unfortunately, I don't think my opinion will be shared by the majority of the people on here though, for reasons I'm sure I don't have to explain. I will say that you probably should have gone ahead and called it "shikaku blast!" or something, embracing the japanese-ness of it, as you didn't really use the fence subject matter anyway, and japanese words just sound cool, lol.

Decent enough, can't really fault it, does what it says on the tin!

I like it, but there are far too many levels with very little variance, and no real sense of achievement.