Akira knew they were planetside already, and he knew he probably could have wandered into town by now. But really, he hadn't seen the point in doing so yet. They were still waiting on Serenity to land, and for whatever reason he really didn't want to miss it. He'd liked the other mechanic, Kaylee, if nothing else. She seemed fun.
He hadn't wanted to wander off too far, so he'd been doing what he did when they were in space. Taking care of Lorryana's engine. After seeing how bad the Dorrian's had been, well he'd come back home and had barely left the engine room since, he'd even ended up napping in there earlier.
Which was why he was so alarmed to see someone he was fairly certain he didn't know in there. He'd just wandered off to get a sandwich after all.