Normally a staller like Halley might quake in fear in the face of another staller - one with more resources than he does to boot - but this street rat has seen far scarier things in his lifetime than Yukiko. Sure, her healing and Auto-Sukukaja armor could give him trouble with his SP limitations, but Halley knows that the trick to taking Yukiko down is status. Luckily, he has plenty of it… granted, they're not very accurate. Of course, his Improved Slingshot should simultaneously damage Yukiko and attempt to inflict a match ending petrify for free! And, as always, Halley can attempt to knock Yukiko down with Aqua Blade and keep his own body strong with Healing. It may not be an easy match, but anyone who has lived on the street knows that you don’t go down without a fight. Heck, maybe he could grab a meal at Yukiko's inn after victory. He could use the comfort.