
There is no way to enter full-width Japanese punctuation with PPSSPP's Japanese keyboard. I noticed this when entering passwords in Lord of Apocalypse [NPJH50503], since two of the passwords 'いんぷれす・げーむうぉっち' and 'そうごうげーむじょうほうさいと・げーむすぽっとじゃぱん' contain ・.
This is for both Windows and Android, using 1.11.3 on both.