The girl with atramentous hair used this time to try and confuse her opponent. Knowing that the smoke will clear soon, she dips her hands into her pouch to retrieve a smoke bomb. 

While her actions remain hidden to the boy, he would notice that even after the smoke clears, he is still inside of it.

( Hidden action, smoke remains )
The girl with atramentous hair whispers faintly.
Uchiha, Yurou has removed Smoke Bomb from his shinobi kit.
The girl with atramentous hair has pinged you.
Marlo has activated a perk: Enhanced Hearing!
Marlo whispers: can u tell me what id hear)
The girl with atramentous hair whispers: [ Nothing
The girl with atramentous hair whispers: [ Movement, smoke
The girl with atramentous hair whispers: [ That's all
Marlo continued to maneuver amongst the smoke, tracking the young Uchiha's location. He glanced up, checking to see if she possibly Shunshin jumped to elevate herself. But assuming she didn't, nce he got within range he'd launch a punch towards where he believed her to be.
Marlo has activated a perk: Jarring Blows!
Marlo whispers: C+ agil, say B str)
Marlo whispers: my bad B agil)
Marlo whispers: b agil, b str)
The girl with atramentous hair whispers: [ Do you have Freerunner?
The girl with atramentous hair whispers: [ Well, not like it matters too much, let me just rp
Marlo whispers: yeah, 4/5 TM)
The girl with atramentous hair whispers: [ Mind showing movement whispers, not sure if it's going to matter
The girl with atramentous hair whispers: [ Nevermind, yes it will not matter.
The girl with atramentous hair grinned when she saw that chakra color head for her once more. Even if the boy was about to get close, it was far too late. Her feet carry her backwards as she grabs at a lighter at her pouch, igniting it and tossing it inside of the smoke.

What the boy thought would be a smoke bomb, was in actuality a gunpowder-created smoke that explodes immediately, aiming to swallow up not only the boy, but whatever it is that he would set a replacement with. The diameter of the smoke is enough to cover the old bomb's area of effect, as well as her entire front.

 ( Katon proof: https://gyazo.com/45e4b15a489d91f4a371138a5bc42fda )
 ( S- speed, C+ damage )
The girl with atramentous hair has activated a technique: Katon: Haisekishou!
The girl with atramentous hair reduces their chakra by a cost of C. 
The girl with atramentous hair whispers faintly.
The girl with atramentous hair has recovered his defense.
The girl with atramentous hair has defended for one turn.
The girl with atramentous hair 1/4, petty
The girl with atramentous hair has activated a perk: Conflagration!
Marlo heard the faint click of the lighter just as his fist had struck air. Almost immediately he was on guard, falling to a crouch. The heat started to pick up and he could only assume a Katon technique was coming, but the waves of heat seemed to be emanating from all directions along with the roar of the scalding flames. "Shit.. Hungh!"

From a crouch the young bastard punched the ground with his good hand, spawning a large dome around his body. It seemed to bolster enough might to stand against the surrounding ash and brimstone.

Unbeknownst to Yurou, Marlo was still in, and likely still giving chase.
(Clashout, should be valid)
Marlo has activated a technique: Doton: Iwadomu!
Marlo has activated a perk: Doton Seal Mastery!