@TimeVolt
Ah no worries man, haveing a discussion is not bad as long as it dont go on for days and it's allways fun to hear other peoples opinions.
Basiclly its just a artistic choise that failed.
They put most effort into making it look cool and forgot to check if it make logical sense.
The reason could be for example that only some have trails because of the angele it was shot at, but that still leaves a inconsistency that not all or most of the closer once have lines.
So it would have to be some kind of funky richoche effect then, but that is pretty strange in itself too, as it would mean it did not penetrate....
And im pretty sure the rest of the bullets did do that.
So unless some of the rock is made from some super durable stuff much harder then rock that got hit from a very specific angle it makes no sense at all how it could Richoche like that.
And even then, by now its thinking way to deep for analysing a single page.
So yeah, its a fantasy manga, you got to deal with a pretty big suspension of disbelief or it sucks all the fun out of most mangas that dont focus really hard on avoiding it.