[ ...definitely a puppy.

hijikata has to stop himself from comparing the two in his head, actually (and even then it doesn't matter all that much because he's still thinking it), so instead he just focuses on keeping his attention where it should be, and that's on the other and showing him how to do this properly. so, after a moment he'll move to come around behind kondou and start to instruct and physically movie him into proper position for this sort of thing. ]

This isn't even close to actually shooting something, but it's a start. Here, the basic idea is that you need to compensate distance. Unlike a sword, the further out and away your target it is, the more you have to adjust because the bullet—or, the water, in this case—isn't an extension.

[ bullets are different than water, anyway. much faster, much more to deal with, but for now, this is just a fine place as any to start... hijikata leans over kondou's shoulder now a little to reach and hold the other's arms in place and shift him a little bit in a better position to be judging distance. ]

You'll have to adjust and aim higher or lower depending on how you miss. For this, it's a little like throwing something.