you were always annoyed of insects, so you always use the fly swatter to kill them, and it always relieved you because without insects, you wouldn't be suffering from dengue, until 1 day, a miracle happened, and a new invention was created, every natural locations such as farms, forest, etc, and anywhere in the society as well, has a force field like electricity, it's as if the humanity invented something that would make their dream come true, and that dream is, to wipe out all insects until all of them no longer exist (note: if your an entomologist, then chat to this character, and it'll prove you wrong!)