Music Video Featuring A Birthday Cake Delivery Animation

Hi all!

I've been looking for a video that I used to play for my kids when they were little, maybe 11-12 years ago.

It's a music video featuring a Korean (?) (maybe Japanese) rock song accompanied by a really cute animation of a hunanoid bunny or cat trying to deliver a cake.

The animation style was line outlines apart from a few solid colours used for emphasis.

The main character is trying to get a birthday cake to their friend's party, other animals are waiting.

He manages to keep to cake safe despite being squashed on the train, bumped on the street, and having a gang of thugs chase after him. While running from the thugs, he bursts through the door of the venue, trips, and the cake flies out of the box and squashes on the floor. It's a happy ending though, because the girl bunny loves the cake even though it's squashed, and the thugs are even allowed to have some cake.

I vaguely remember the lyrics saying in English "It's your birthday" during the chorus, but other than that it was all Korean/Japanese.

Please, if anyone remembers anything about this, help me!