We would approach Souya first, because he might let us get away with it and because he seems to care about everyone in Aather, even the wildlife. We would try to distract him and lure him in with the toad, and then we would tackle him. To get him to stay still and tie him up with the wire, we would ask him first, then we would threaten the toad with the lighter, and if he still didn't care, we would threaten him with the lighter directly.
If that didn't work, we would go after Dusk-san because Kitten-san knows him, or after Spark-san because he knows me. We would ask them to come over so we could talk to them, distract them with the toad and set up the wire so someone else could pull from it and make them trip. Then someone would force them to stay still on the floor threatening them with the lighter while someone ties up their feet, then their hands, and we would tie them to a tree.
Re: [FINAL ANSWER]
We would approach Souya first, because he might let us get away with it and because he seems to care about everyone in Aather, even the wildlife. We would try to distract him and lure him in with the toad, and then we would tackle him. To get him to stay still and tie him up with the wire, we would ask him first, then we would threaten the toad with the lighter, and if he still didn't care, we would threaten him with the lighter directly.
If that didn't work, we would go after Dusk-san because Kitten-san knows him, or after Spark-san because he knows me. We would ask them to come over so we could talk to them, distract them with the toad and set up the wire so someone else could pull from it and make them trip. Then someone would force them to stay still on the floor threatening them with the lighter while someone ties up their feet, then their hands, and we would tie them to a tree.