'Rainbow Kindergarten' is a story sent from beyond the Rainbow Bridge by dog ​​friends who have gone before us to all pet owners in the world.

'Rainbow Kindergarten' where friends who have gone to Puppy Star stay for a while

As the protagonist and new student 'Shuha' enters this place, she meets her kindergarten friends 'Huchu, Dubu, Choco, and Kongi'.

This is a growth story in which each of these five friends resolves the memories and wounds they experienced with their companions on Earth in their own way.