"piece by piece" has a humorous and kind perspective, like a human comedy. It doesn't flatly assert or correct anyone with a "No!". It's like the sun in the fairy tale "The North Wind and the Sun." The message that a gentle approach can change society and naturally increase our numbers of friends was well conveyed. Community design techniques for creating places where people can gather are evident. All the works share a common theme: the importance and richness of connecting generations while protecting resources. They also teach us that well-being lies beyond sustainability.