How to type and handwrite Japanese on devices without Japanese input? By default there is no Japanese input in Samsung keyboard. I know there is a plugin called Multiling with it's HanWriting plugin but it only supports 1 letter by time.

Is there a way to handwrite Japanese in sentence?
I use the Simeji input method. it uses the great "flick" method for inputting kana. It takes some getting used to, but is very fast once you do. To switch between keyboards, just long press in the text field.