Noticed that Dragon Marked For Death is available for preload on the Japanese eShop and grabbed it right away woo woo! And the whole "purchase both versions for $14.99" to gain access to all characters seems to be incorrect. I can't buy the Advanced Attackers version (not that I'd do it anyway) when I access the US store since I have already purchased the Frontline Fighter version. The game will probably have an option to purchase the remaining 2 characters as DLC (still really shitty, but yeah) since the Japanese game page briefly mention "additional purchaseable contents in-game".