They're mostly often called the Hitachiin twins, "Minor Devils," or "evil doppelgängers" (the last title only used by Tamaki). Hikaru's rose is pale blue; Kaoru's is orange/coral. When hosting, they display an extreme brotherly enjoy which borders about the incestuous, but which appeals to a big proportion of their clientele. https://trevordnzku.blogerus.com/51434829/indicators-on-host-club-charm-you-should-know