Oblivion Island: Haruka and the Magic Mirror

Oblivion Island: Haruka and the Magic Mirror (ホッタラケの島 〜遥と魔法の鏡〜, Hottarake no Shima: Haruka to Mahō no Kagami) is a 2009 Japanese CGI movie directed by Shinsuke Sato. The film was produced in commemoration of Fuji Television's 50th anniversary and was nominated for the award for Excellent Animation of the Year at the 33rd Japan Academy Prize.

Plot
Your favorite teddy bear. That model kit that took so long to complete. The picture book you used to read over and over again. The shining stone you found that day in the park. Where do all your childhood treasures go when you grow up? In this story, we meet fantastic creatures that gather all these little objects that fall into oblivion as they are forgotten by their owners when they step into adulthood. These creatures sneak into our world from a different dimension, and unseen by humans, they take all the ditched and forgotten "treasures" into their world. Here, they use their booty to build their own city, a fairy-tale like place called... Oblivion Island!

Since as a child, Haruka always treasured the hand mirror she had received from her mother before passing away. After time passed, Haruka already forgot and lost the mirror and decides to pray at a local shrine for it to return. When she loses her house key, they were found by a small fox/pig-like creature which flees into the woods. Haruka follows the creature until coming across a small pool, where she is sucked into it and into the world of the forgotten