User blog comment:Martialmaniac/Urgent adition and correction to Gon's page - Aiko and Paper/@comment-26871067-20170208022731/@comment-26871067-20170215035944

So, having rewatched the scene in question, I'm pretty sure I've figured it out. Wasn't quite what I thought it was, but sort of close - "aiko de" is not the full sentence, but it isn't interrupted because he fails to attack. The line is actually completed, just delayed, and it's not "aiko desho".

In general, Gon's attacks using Jajanken do not follow the typical chant. He always does "saisho wa guu", but rather than "jan, ken, pon!" he instead does "jan, ken, [guu(rock)/paa(paper)/choki(scissors)]". It depends on which he's using, so in our terms it would sort of be like saying "rock, paper, scissors - rock!" while throwing down rock, rather than "rock, paper, scissors, shoot" and throwing rock.

When he uses "aiko", what he actually says is "aiko de", there's the expected significant Dramatic Pause, and then he announces which technique he's using. Against Knuckle it's rock. So rather than Gon saying "aiko de" and that being it, he's saying "ai, ko de, guu!" in the same way he does "jan, ken, guu". It's the same thing he does normally, cutting off the last syllable and replacing it with the announcement of what he's throwing. The confusion stems from the fact that his chant is interrupted by Knuckle's monologue/explanation as he figures out what Gon is doing.

I haven't refreshed myself on the second part where it's mentioned yet, but I'm confident that's what it is.

I did some more digging, and the same way jankenpon is shortened to "janken", when there's a draw it's referred to solely as "aiko". This is also what Knuckle's thoughts call it - the dialogue basically goes like this:

Gon: Aiko de-

Knuckle's internal dialogue: Aiko!? [then he summarizes what Gon did - using "paa" as a distraction to get behind Knuckle and charge another attack]

Gon: - guu!

So, I'm confident that if the "technique" has a name, it's "aiko".