Koei Tecmo Games released today in Japan the iOS version of the Toukiden Mononofu smartphone game. You can already download the Android version from March 27, 2017 and the content is the same in the new iOS version.
You can download it for free from the Japan Apple AppStore. The game requires minimum iOS 8.0 OS. The pre-registered users can claim their gifts already with the first login. Enjoy the game.