[quote=@Webmaster]
<Snipped quote by souleaterfan320>

The issue is Crona's body structure. It's made with Silicon blood instead of Carbon-based, increasing the weight and strength. Its skin is also made of condensed Carbon. You could pierce the skin, but not the blood.
[/quote]

Couldn't we just fight him using chemical based weapons then? Perhaps I could use a silicon solvent based liquid and cover my sword with it, giving it the chemicals  it needs to cut through the blood as well?