Alright, firstly: I really like how you drew that hand opening the eye. It's a sweet angle, and although the hand's a bit chubby and big compared to the dead boy's head I do commend you because I can't draw angles like that myself!
I was going to say I didn't really get what was going on in the fourth panel, but he's closing the dead boy's mouth, right? It might look better if you hadn't drawn him with his fist closed, because it kind of looks like the dead boy's being punched in the throat very softly for some creepy reason. It might've looked more gentle to close his mouth with an open palm.
Re bent knees: at least you don't draw the legs bent at the pelvis, like some people have the strange habit of doing. They pose would look pretty good if you didn't draw his right foot flat on the ground like that because try it: it's uncomfortable as hell and even a bit painful. One would usually support one's weight on the bent toes.
Other than that, the wrinkles on the hands make them look a little like 30+ hands instead of teens. Even though teenagers do have wrinkly hands, an artist once said that 'a wrinkle adds a year', so you might try adding slight indications of veins or knuckles instead? Might help with the chubbiness problem too, unless they're supposed to be fat. In which case, disregard most of this critique :v
I quite like the poses and expressions on this page and you're visibly improving anatomy-wise, but be careful: your characters are all looking very much like grown men, including the girl. I'm not ace at teenagers or girls myself, but drastically reduce the width of the shoulders (shoulder-pads are so 80s, a half-face (vertically) should do) and make them aligned with the hips instead of larger, unless they're all working out between pages.
For the girls: don't make the shoulder wider than the hips on women in general. Though it's less pronounced on teenaged girls, there should still be a hint of hourglass figure. The neck needs to be slimmer too, because although girls have pretty much the same neck width as boys in real life (men and women are another story), you do need to change things in drawings. It'd help to make the hands more elegant and thin on girls as well but if you have a hard enough time drawing hands as it is don't bother.
Interesting plot development!
Good action in page twenty, and nice use of action lines. Boy with dark glasses' hand seems to be attached backwards though, and dull edges on hatchet plus hard angle make it look like a mallet. Some action lines on the hatchet in the next-to-last panel would've been nice to really hammer in the fact that Daichi's just been stabbed deeply in the shoulder.
Nasty cut too, pretty sure his tendon's through. Say goodbye to your arm, man, my dad had that happen to the back of his legs with pieces of car and he can't run anymore.
