Ok so I've always loved shoujo trash anime. I really have. I've never gotten to cosplay any of the main characters from one though since I'm not a rail thin, pasty Asian boy. Hak was definitely my first and best chance and shoujo grossness so I took it. Admittedly I didn't put a terrible amount of effort into his weapon, but the principles are exactly the same as Draven.
Here are the references.
Took a round piece of wood and patterned the blade head from cardstock.
Cut the head and blade details from 6mm PVC foam. Not shown is when I ground down the wooden shaft where it met the blade head to be flat. Drilled some holes to make it lighter.
Used an angle grinder to bevel the edges.
Painted and primed with Rustoleum spray paints. I completely skipped the Bondo steps to fill in gaps. Don't be like me lol.
It was a calculated risk though since pretty much none of my photos show the damn thing anyway. In any case here's my gross maiden heart in pictures.