Ok. first time writing a review , so forgive me if I write something wrong or hurtful...

This series does not give you much explanations at all. Lots of things happen, Things escalate rather quickly, but then the characters don't quite react to what's happening or what just happened in the appropriate manner. I don't know if it was intentional from the creators of this show, trying to be cheeky with the humor maybe.. Most of the characters are strange in this series. Strangest of them all , Ahn Eun Young, who is played well by Jung Yu Mi. I think the casting was perfect, and so was her wardrobe, and styling, and props. Nam Joo Hyuk played the role of Mr. Hong well, but it seemed weird, that both the leads would just become friends, after the strange happenings in episode 1. He just accepts without any questions that Miss. Ahn could see jellies and that they actually exist. There is no exposition scene where Miss. Ahn reveals her secret to Mr. Hong, we are asked to assume that it happened and Mr. Hong is completely OK with it, and actually plays along with tying the armpit hairs of two students... ? i cant explain that ... that's how weird this drama is...lol.... Suddenly the nurse and a student are freinds, and strangely that student is at her office almost all the time ! The Mite eater character was intriguing , but it wasn't explained , nor does it seem logical, how the character comes to be a school student in the first place. The story leaves a lot of loose plot threads never explaining it, (what's the deal with acupuncture lady ) , Mr. Mackenzie plot thread could have lead somewhere but he disappears towards the end episodes. At the end there is a major calamity, and it would have been interesting to see how it was resolved, but nothing is shown.
Most will find this weird, some people will like it, others won't. Personally, I was left wanting for more explanations and felt rather unsatisfied with the ending after investing time in watching this series (even though it's not long). I liked the characters, the setting; I liked the music, it is really unique and adds to the quirkiness of the show. The effects are also really great and also gross at some times. The creatures were well designed, some were very cute. All in all, an Okay show to pass time...