I can't help to wonder if the final scene from DC II somehow ties into how Yoshinos show up in the third game. The background in that image and the name Charles made me even more suspicious, theres also the DC III vndb.org page that mentioned a message from 1951.
I havent bothered checking the details but it would make more sense that simply going with the Sakura ending from the first game (more interesting too). Honestly I think it would be a waste not to take advantage of the drama that was revealed at the end of DC II, even if they have to go a roundabout way to do it.
Maybe the story has already been made clear on the DC III homepage and I'm only spouting is nonsense here (been a while since this thread was updated) but meh
