Sirius and Xander moved with slow, deliberate steps, ensuring they didn't make a single sound, even controlling their breathing as best they could to avoid drawing attention.
Whose attention? The tetramaulers, of course. They were sneaking into a den of these ravenous creatures. While the pace made it feel like a cautious stroll, they were still boldly moving right into the heart of the danger.
'So, this is what it's like to move under the cover of shadows,' Sirius mused as he clung to Xander, benefiting from the shadow cloaking ability his cousin used to render them invisible. It was how Xander could blend into the darkness, using the shadows to erase his presence in the dim cave.