Does Sadaso have only one arm?

Yeah, the one-armed fighter, with the mask-like face.

The two of us were still weaker than Kite who'd lost an arm. That thing knew.

Or are you upset that this is happening after you've lost an arm, Saber?

I won't allow you to defeat Saber, who has lost an arm, in my presence!

The enemy has only one arm!

Only being able to use one arm is a bit...!

At first, I lost the use of one arm.

If giving up my arm will save Fuji-nee's life, I'll do it without a second's thought.

Even though I expended most of my mana, one of my arms was rendered useless, and my Aias was completely destroyed.

Don't be stupid, Gon! Didn't you see that monster? Its arm was bigger than your entire body!