KIWA is infinitely picky when it comes to ingredients.
Even if it's not fresh or reasonably priced, it can't be a tile-roofed lunchbox. If you're not healthy, you can never become a roof tile.

A restaurant company should value its customers more than any other company. That is KIWA's belief.

The belief that if the lunch box of the tile is healthy, the customer can also be healthy, That is the same initial focus of KIWA.