I've tasted taiyaki in Japan and this one despite a Korean dessert, is similar to Japan's taiyaki.

The bottom layer is filled with warm custard cream since the fish bread is baked. Instead of ice cream, they give plain frozen yoghurt to balance the temperature. Finally it is finished with chocolate drizzle, crushed cereal, and a stick of grapes covered in chocolate (which I thought were mochi at first!).

Nothing really special about the flavour but do eat the yoghurt before it melts!