This provides an extensive case study of "Oshi-dan," a shrine created for displaying cherished characters or idols developed by Hasegawa, a major Japanese Buddhist altar manufacturer.

This business venture is presented as a model for successful new market entry by dramatically redefining the target customer from traditional, middle-aged buyers of altars to younger consumers engaged in "Oshi-katsu" (fandom activities). The analysis details how the company leveraged its existing manufacturing expertise (using high-quality Hinoki wood and traditional techniques) and deep customer empathy (driven by the young developer who was also a fan) to create a premium product that met the unarticulated needs of the fandom community.

It emphasizes that bold customer re-selection and reinterpreting existing assets are key strategies for modern business innovation, ensuring that product concept and communication align perfectly with the new customer's culture and values.