Upon entering, Arthur saw the back of a muscular man, clad only in a singlet, hammering down on a piece of metal that changed shape with every strike.
[That's an incredibly dense lump of adamantium. [How that thing's gravitational field isn't having this mountain orbit it is a mystery to me…]
Celestia's comment made Arthur raise an eyebrow, mildly surprised by how effortlessly the man reshaped such a dense material with a single hit.
'Well, he's a Supreme, so that makes sense.'
[I'm afraid he's not, Master.]
'Huh? What do you mean?'
Lostvayne didn't respond, instead condensing cosmic energy and taking on his male humanoid form, dressed similarly to Arthur in a casual T-shirt, joggers, and sneakers.
[You've grown much stronger, Mofil.]
As he spoke, the man hammered down on the lump of metal, then picked it up with tongs and dipped it into a bowl of what appeared to be water.
'Appeared' because the temperature of that metal should have vaporised ordinary water in an instant.