Left Reimu: "Easy Yu~" Right Reimu: "Reimyu's Myu" (no idea what those is supposed to mean) The sfx to the left seem to mean drumming "kan kankankan" The crying KoReimu is saying: "Reimyu wants to drum toooo!!" The sfx on the right mean "kon kon", which seems to be drumming as well, just with a different sound.