That's right, the sun was setting at the beginning of the previous duel. That's kind of worrisome, isn't it? All these kids, staying outdoors alone at night on this strange island. Our protagonists have no food, no water, and I'm guessing none of them thought to pack a tent or something for shelter either. What if it rains? Or what if some local predator finds them? Of course, I haven't SEEN any wildlife so far on the island except for those fish that Ryota caught, so maybe that particular danger they could avoid pretty easily.
At least, the four-legged kind of predator.

( Onward )
At least, the four-legged kind of predator.

( Onward )