Tamagotchi: Happiest Story in the Universe!

Tamagotchi Happiest Story in the Universe ? , ga Tamagotchi Uch Ichi Happy na Monogatari?? , lit. Film Tamagotchi Happiest Story in the Universe is a 2008 Japanese Animated Film produced by OLMs Team Kamei division, based on the Tamagotchi digital pet franchise jointly created by Bandai and WiZ. It is directed by Jji Shimura and written by Aya Matsui, released into Japanese theaters on December 20, 2008, and on DVD on June 26, 2009. It was later released in France on February 17, 2010.

After the children exit their stories and are starting to leave the library, Kikitchi hears a small voice calling out for help. However, due to the fact that he can hear smaller sounds than others, no one else can hear it, and tell him he must be hearing things. As Kuchipatchi, Mametchi, Memetchi, and Chamametchi tell about what happened while they were in their stories, Makiko and Memetchi get into an argument over the prince that had been in their story. As they are walking, Kikitchi makes them fall by throwing banana peels in front of them. As he laughs, Memetchi asks him if he enjoyed his story. He responds that he didnt like it at all.Meanwhile, Mametchi has an idea for an invention, and he rushes home. After several failed attempts, he finally gets his experiment right, and he invites his friends over to watch him complete it. But after several events, the experiment goes wrong, and a small creature emerges. Mametchi explains that he did not expect his experiment to become and actual living thing, but that the creature can absorb the feelings of others and use it to make other people happy. Mametchi decides to call his new creature Hapihapitchi. ........

Source: Wikipedia