I'll be honest: I don't really know what the other option, “Romaji,” is. Here's a rundown on how the Romaji keyboard works, though; apparently it comes pre-installed on most Japanese iPhones ...

Right now, KanaChord only outputs Kana Unicode and not Kanji Unicode, which gives an incomplete input system for Japanese as-is. Don’t worry — [Mac] is working on the KanaChord Plus Keyboard ...

Head into Settings > General > Keyboard. Tap “Add New Keyboard” then scroll down and select Japanese > Romaji. With that keyboard enabled, head back to an app with a keyboard. Tap and hold the ...

Then navigate to General > Keyboard > Keyboards > Add New Keyboard. You'll want to add the Japanese keyboards with Kana and Romaji variants. That means you're set up to use the emotions – now ...