Thanks for digging my stuff! As for Haji's face in that pic.... I don't know. I did okay drawing his body and the cello, but when I got to the face things went downhill. I redrew that pic several times but the face always looked wrong. So it's not that I meant for him to look angry, he just ended up looking that way. Not my best face ever.
So yeah, no big artistic idea behind his expression, just an off drawing day.