Thanks! That is great feedback.
Honestly, I have been doing the majority of my testing using a gamepad, and even when I have been using keyboard I had already customized the controls (which gets saved in local storage) so I can't even remember what the default controls are.
I'll play more often using keyboard so I can figure out some better default controls, but anyone can weigh in on here as well.
I think I was going for all the gameplay action keys on the left side of the keyboard and dialogue keys on the right. I pretty sure I chose Z though thinking that is a common option when using the arrow keys. Basically I just kind of picked something at first and forgot to go back and rethink it all once I had all the buttons/actions added.