I have no idea what a mermaid is either, but transforming into something else doesn't sound fun.

[Sync would rather be stuck as what he is. It took him long enough to accept that he was a replica, after all.

Morgana's words make him pause though, thinking on them as he glances to one side] Freedom...wanting something... [He shakes his head, unable to stop the uncertainty from showing on his face] I've never wanted anything in my life, aside from my old purpose. But it's impossible here, so...there's no real point to my existence, right now.