Hisoka was. . .an odd one, to say the least. You knew he was on the insane side (and that was putting it nicely most days), but you still ended up falling for the weird ass jester in the end.
It was during your time in Heaven's Arena that he'd taken an interest in you. Not to boast, but you were strong. While you were still training, the art of nen had come fairly natural to you after some effort. Before leaving you to your own devices, your master had recommended you test your level in the famed coliseum.
You had made it far, even to your own surprise. Fighting your way above the 200th floor, you were eventually pitted against the infamous Hisoka. It was what turned out to be your last fight in Heaven's Arena.
And the bastard didn't even show.