I would like to consult other's opinion!

In the story Wataru himself introduces Keito as Eichi's right hand and himself as Eichi's left hand, and in his commentary after introducing that he is Eichi's left hand, he says "Together with the right hand(Keito), we're leaving us in your care(Yoroshiku onegaishimasu)". so I feel that Left-handed may not really be what they meant.

Would Clown of the Left Hand/Left Hand Clown be better? or something else... (i cant think of any nice ones that flow well)