Do your remember making lists of desert island objects when you were a kid? That was what you did before you made lists of desert island songs and books as a teenager. In such lists, you'd think about what you'd need to survive and use those ten items to make a nuclear reactor out of a coconut so that you could live in style in exile.
McToast is sad toast. It's what you'd make at home if you were out of bread and had nothing but stale burger buns to work with.
Sometimes it feels like fast food places are working with the same limits. They have a short list of food stuffs and they keep juggling the mix around to create "new" menu items. This breakfast option from McDonald's Japan feels like a dance card shuffled into the wrong place. It is their fried chicken patty added to an Egg McMuffin. I guess that someone at corporate asked, "what do we have that we haven't swapped into the morning menu?" Still, it's less pathetic than the "McToast" option. That's a burger bun flipped around so that the inside is toasted and filled with ham (Canadian bacon) and cheese.
This probably seems less strange in Japan than it would in America. They already have hot dogs on their regular morning menu there and it is a culture which includes fish and rice as part of its traditional breakfast. To me though, fried chicken, even in the form of a patty of pressed meat, is just "wrong" for breakfast. I'm guessing it's pretty good though if you're hungover, as no small number of businessmen are inclined to be.