Rematch (part 2)

I slashed its body for sure, which completely startled the demon and made it jump backwards. I was able to create a long slash mark on its stomach, which should've been very lethal for the demon. But, unlike the rock demon, this one is made of liquid. Mercury liquid.

It can literally… close that slash wound almost instantly.

Seeing my attempt at hurting the demon, the demon owner laughed so loudly.

"I like that attempt!! But, please! Use your head!! You think you can cut liquid with a sword???"

I mean.…those fingers don't look like water…

Wait… How come the fingers can turn so hard like a legitimate metal?

If this thing is completely made with a Mercury, then how come the fingers can turn into blades? Does it… harden?

I'm feeling like I'm close to the key answer to the demon's weakness, but I just don't know what it really was. And to find that answer, I will need to remember another bit of memory from last week. How did the Mercury demon from last week die?