perfectly good = 'bacchigu,' a word not to be found in any dictionary that caused much confusion until we discovered that it was a newfangled compound of bacchiri (on target, appropriate) and gu (corruption of English 'good'). How...inventive. ^_^;;;;;;;

bun = swish (of Hiei's arm through air)    gaku = being shaken

This is the story that caused the inestimable M.J. Johnson to comment that Fuji's Kurama is half seme and half giddy teenage girl.