YOU SAID:
implacable grinning devils
INTO JAPANESE
執拗なニヤリと悪魔
BACK INTO ENGLISH
Relentless grin and devil
INTO JAPANESE
執拗な笑顔と悪魔
BACK INTO ENGLISH
Relentless smile and devil
INTO JAPANESE
執拗な笑顔と悪魔
BACK INTO ENGLISH
Relentless smile and devil
You've done this before, haven't you.