I dont know if you would add a cosplay, but i guess worth a shot.
Zoe ronin, the lost swordsman who decided that swords are not good enough in this world, and started to use some other, handier weapons.
For pose, I would love to see him holding a musket in one hand, a dagger in the other, and just leave the swords on the back. This would look akin to how you would fight with a rapier and a dagger:

something like this, but with the dagger a bit more in front, musket replaces the rapier.
If you find it too hard/time consuming to make, just crossed arms is enough:
TW: a bit too much exposure of upper body ig??? (it should be fine but just in case)

