Pretty cute! Definitely watch the main series first, as you'd want to know the characters. But it is absolutely not related to the main story at all. It's pretty weird and random, but hey, so are the girls. It's not very realistic, as you wouldn't catch them dead in a forest lol. The comedy's a bit funny, not super funny, but decently enjoyable. Surprisingly, there's a bit of plot involved in it. It all adds up to a silly ending. It's incredibly short as well, I'd definitely recommend giving it a go, it's not much of atime waste if you don't like it!