The heroine is Daji and CP Chrollo from "Blade of Heroes".
Her goal is... To steal someone's head! !
Hisoka: "Baby~~Don't take my fruit anymore~~, please!"
Feitan: "Why do you stand in front of me every time you kill someone?"
…
Daji: "Hahahaha, I finally completed the second kill, the third kill, the god-like kill. Hahahahaha!!!"