It's Hiro and Ando! Best Friends till the end of time! I love their dynamic so much, I really hope they get to be together again in this season.
Asians are remarkably difficult to draw. I experienced this firsthand last year when I drew a self-portrait in Life Drawing. I think it's the smooth curves and nebulous, non-angular contours that make it so hard; Ando was much easier than Hiro. XD Hiro's all
while Ando's all DD: Ando's O SHI face. It's the best face in the entire show.