I was surprised to see instant wontons because they usually come frozen or freshly made to be cooked.
It was simple to prepare, just open the lid, put the sachet of soup on the bowl, and add water to the line!
After a few minutes, the wontons were soft with pieces of shiitake mushrooms and seaweed floating in the soup.
After googling it, I was surprised that it is a best seller in Japan and their brand came as early as 1993.
See supplemetary info from their pdf report.
Not only are they popular in Japan, they are popular in the US with a separate website too.