Start Subverting the World from College Students

[Black technology + single female protagonist + interstellar war + science fiction + Dyson sphere] "Why are you starting a war!" "I don't, it's just that the people want them to hang on street lights!" "They are just poor bugs, why should we kill them?" "Rumors are all rumors, I'm just using resources rationally!" "Then tell me why the Andromeda Galaxy Cluster is missing!" "What does this have to do with me? I just put a little thing over there!" It all started with this junior college student.