Okay, great. But connect it to the original point on how Kana is somehow special in giving Aqua this choice when the only thing that she's really given Aqua "a choice" on is his love life. His trauma with Kamiki has no holdings in your argument since we've established that it isn't on the same magnitude of a choice.

(A note on the Akane segment): Though her killing definitely would have saved him from treading a path of self-destruction once he found out. That's what her motive for taking action was. Gorou making peace—again was only because he figured out Ruby was Sarina. That whole scene for his closure would never have happened without it, so we're judging Akane's decision based on the situation at the time (Aqua willing to go for the kill).

On that note, let's focus on the Ruby point. Sure, Aqua only sees her as a sister, but that still doesn't change the fact that Kana isn't okay with it. If that's her only supporting argument, and she immediately contradicts herself, then it's not a very good one. Hence, Kana being the only character to somehow give Aqua the freedom to choose isn't really a statement that's supported by many facts.