My mother hesitated, but continued, “Nuclear weapons have the most power, but they would never have been able to find the materials needed to create one. Plus, if it had been used, the level of destruction would have been on the scale of the previous karma demon incident…” She glanced at me as if suddenly remembering I was there. “Anyway, since there was no residual radiation that comes from the detonation of a nuclear weapon, it couldn’t have been what they used. The next most effective weapon is poison gas, but it is almost impossible for queerats to produce it.”
“…but the Ground Spiders used poison gas before,” I said without thinking.
“The types of gas I’m referring to aren’t the kinds made from burning sulfur or plastic. Nerve gas, choking gas and the like could easily wipe out an entire town,” she said in a slightly reproachful tone.
Of course, I wasn’t a member of the Security Council, and had only been invited to the meeting in the event anyone had questions about queerats. Thankfully, no one seemed to mind that I had spoken out of turn.
“Similarly, biological weapons such as deadly viruses are difficult to make. They’re also not as effective as the two I mentioned before. Apart from these, there are also weapons like earthquake generators and lasers that can cause mass destruction, but not even humans can make them now, not to mention queerats.”
“So can we rule out all weapons from the past? Is there anything else you would like to add?” Tomiko asked gently, as if reading my mother’s mind.
“…aren’t supercluster bombs the only weapons that don’t contradict the evidence found at the scene?” she said in a rush.
“What are those?”
“Like the bombs dropped from planes, but instead of just one large bomb, the inside is filled with hundreds of smaller bomblets. When the main bomb breaks open, the bomblets are scattered over a wide area. When those explode, they spread even smaller bomblets that are filled with metal pellets. Each of the smallest bomblets can cover an area about 20 meters in diameter, and tears everything in it to shreds. There’s no crater left behind, and it could easily blow tens of thousands of queerats to pieces.”