[Why would he speak improperly when he knows how to speak properly? That wouldn't make any sense.]

I am. I'm trained in many forms of combat. [He says this with confidence. He knows he's much stronger and faster than ordinary humans. Obviously this means he'll be fine on his own. However, he doesn't have the most extensive experience with ordinary social situations.]

A partner? No. [He shakes his head slowly. He hasn't worked with a partner before, but it does sound like a good idea, especially as this is a new situation and an unfamiliar location. SOLDIERs work with comrades, and a partner could be useful. He takes Sazh's hand in his own, his grip firm.] My name is Sephiroth. I've never been to a festival before.