I just realised this song really fits for this arc including Kanjuro especially!:
From the spotlight
I can see you
Play your cards right
Kill your stage fright
This could be you
If all the world's a stage
Let's set it on fire
So you be the spy
And I'll be the liar
From the background
You can hear me
Highest billing
Makes a killing
They revere me
That beautiful mask you wear
Is all I desire
So you be the spy
And I'll be the liar.
Face to Face to Face again
And through the camera lens
We ascend
You're a minor part
I'm the major star
HA!
The credits are more than just the end
Cause the truth is
I despise you
I will tear apart
All these works of art
That disguise you
I'm making the final cut
It's down to the wire
So you be the spy
And I'll be the liar
And I'll be the liar
And I'll be the liar
And I'll be the liar
Oda was definitely referencing/influenced by The Laughing Salesman for him too imo: