Melody Mix Glitch :'( Please help

I have a Tamagotchi Melody Mix. Recently, a room divider has shown up in the back of my room. It is red and yellow, and has two people on it. I have tried everything to get rid of it, including changing the background, and cleaning and vacuuming the house, but nothing will make it go away. How can I make this go away? I have uploaded a photo of the screen as my profile picture, if you click on my name you can see it. I tried to upload a photo directly to my post, but the file was too big. Thank you! 

That's a feature not a glitch!

Right now in Japan they are preparing for the Hina Matsuri, or Doll Festival, and that pops up for a short time to celebrate  You will see different seasonal items like that appear occasionally. They just stick around for a few days and then go away automatically.

Thank you!!