[ Totters towards you fastly. By which I mean, Ryuki has just taken a look in the library and is holding an unimpressive scientific book on plant growth tactics, because he really doesn't know anything, and studying seems an boring but safe place to start. When he sees Ellis though, he'll catch that 'Hey --' in his throat and just come directly towards the other instead.
iii - wildcard
And then say hey, with an awkward-ass wave. ]
H-hey! Are you doing, er, alright?