Reborn as a Mantis? I Slay My Way Across the Immortal Realm with the System!

Other people are reborn as dragons or phoenixes. Me? I came back as a mantis. And as if that weren’t enough, there’s a centipede and a green snake beside me, both reborn as powerful Emperors. They look at me and sneer, “A mortal? Trash!” I grin. “Sorry, I have a System.” And so... Ants: “Stay back!” Demon beasts: “Please don’t kill me!” Demon Emperor and Empress: “Big brother, please spare us!”