Yorokobi is a pint-sized doll-like hedgehog due to the stitches on his body and small size. He is very happy and can't be unhappy or angry at all, Just. Happiness. His two hands are Paintbrush that helps him paint things blue, He believes blue is a happy color and wants to Paint the world blue(Literally) He seems to fear Hankan(Guardian of Antipathy) due to his intense hate for Yorokobi and his Paint.