OUUUU Ishiguro Hideo. i know that guy from "Ichi Pondo no Fukuin". and he had a cameo in "MR.BRAIN" and was in "Gokusen 3".
i think it's great Ayu has a j-drama tie-in, even if it's not one of the most anticipated ones (Takizawa Hideaki, TOKIO, & B'z got "Orthros no Inu", "Karei Naru Spy", & "BUZZER BEAT" tie-ins already). but j-drama tie-ins are good exposure, nevertheless.