Ojamajo Doremi 16

I am Harukaze Doremi, a high school freshman! And today is my elementary school reunion. I should be able to meet Hazuki-chan and Ai-chan, but why isn't Onpu-chan there...? What has happened to her? And then, the MAHO-do is somehow back at its nostalgic place? I feel that this is going to cause so much chaos. Will I b...