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What is Happiness?
Children's Book
The tears of farewell mark the beginning of a miracle journey.
With the wish to see his mama again, Mamesuke takes his first step into the adventure of the Rainbow Bridge.
Character Design
A closer look at the characters who bring this world to life
Petra
Petra is a gentle and curious young squirrel whose warm heart and earnest nature guide her through each discovery, inviting readers to see the world with childlike wonder.
Koto & Ito
Koto and Ito are lively twin squirrels who support Petra with their playful energy—always eager to help, explore, and brighten every moment they share
Animals
Birds sing with delight, otters play freely, and Meerkat nap peacefully under the warm sunshine. Just watching them gently unravels the heart, offering a moment of quiet healing.
Ohagi Pesha
With a gentle smile and flowers blooming around them, Pesha embodies the kindness that fills this world.
Daifuku Pecha
Pecha’s lively bouncing captures their cheerful spirit and reflects the freedom and joy that define this world.
Flower
The blooming, soaring flowers express a release from pain and suffering—a visual embodiment of liberation.
Butterflies
In Japan, のれん at baths sparks a thrill before soaking—this one, bearing the Koguma kamon and name, deepens the theme.
Dango Bucha
Bucha’s solid, reassuring presence watches over Mamesuke with quiet care—an image that conveys the deep sense of safety this world offers.
Stationmaster
The Stationmaster is a calm, kind hippo who watches over Petra and the town with the warmth of a gentle guardian, offering quiet support whenever it’s needed
Black Cat
Misha, an enchantingly graceful cat, quietly shares with Mamesuke the path to fulfilling the “one wish” everyone else has avoided. Her playful wink becomes the turning point that stirs fate.
Rainbow
The rainbow that always stretches across the world of the Rainbow Bridge—a gentle arc that connects worlds.
Other Characters
As Misha speaks, the companions stir, and the atmosphere shifts dramatically.
Steam Locomotive Train
A guide who carries Petra forward. A presence like a spirit.
Stray beasts
The souls of wild animals like lions. Even after leaving their physical forms, they do not cross the Rainbow Bridge, but instead roam the spirit realm.
Background
In hues of black, blue, and a hint of violet, the sharp glint in the stray beasts’ eyes stands out—emphasizing the stark contrast between this realm and the world of the Rainbow Bridge.
Fog
The mist adds a layer of mystery to the scene, enhancing the presence and aura of the stray beasts.
Environment Concept
Step into the landscapes that shape the heart of this story
Message
Protect your heart—and the unwavering love you hold for your dogs and cats.
