Japan entertainment’s separated at birth: Kazunari Ninomiya of Arashi and Riisa Naka. Need I say more? photos below from stormychu on tumblr: photos below from yayhooraywoohoo on tumblr (during an earlier appearance of Riisa on the Arashi bus): Trivia: Riisa is part-Swedish. It would be cute to have these two do a project together. Riisa…