Rui noticed that he was incredibly confident and relaxed despite their environment. That probably meant that he had achieved some success. Furthermore, that also probably meant that he was quite eager to put himself to the test against Rui.
Rui hadn't failed to notice that he was barefooted.
That was strange.
Rui had told him that without the rubber that they were wearing, they were prone to getting struck by lightning.
Before he could even ask Kane what he was doing, or what he had in mind in regards to their little friendly competition, Kane had already made up his mind.
"Whoever makes a lap around the valley first wins!" Kane grinned as he shot away, getting a bit of a headstart.
"That's cheating," Rui grumbled lightheartedly as immediately pursued Kane swiftly.
Rather than trying to overtake him, he made sure to maintain a constant distance behind him. This was difficult in and of itself, given how fast and speedy Kane was.