Did the first one. I'm much better at drawing on paper than the computer so forgive me for the shading (which was meant to be done like a quickish sketch thing anyway). So, I've fixed those tiny ass ankles, too thicc thighs, potato-shaped face, and tiny forehead syndrome. I also decreased her boob size and gave her an actual high-school uniform (albeit, color changed because admittedly in anime the uniforms tend to be different colors than the standard "real-life" uniforms). I couldn't bring myself to give her that. Psychotic-ass default neutral expression because seriously, anyone who saw someone as flat-faced as her would probably avoid the hell out of her/gossip about how creepy she looked which would contradict Alex's "she appears to be normal, and acts normal to the other students" mentality. I'll do Osana next when I have the free time.
EDIT: I see that the "original" concepts were better, but they still had hella short skirts and kind of disproportionate waist to hip ratios. That and they all had the same body type, so I'll still do these for variation, because not all girls are cookie-cutter same shape.