You was the jinchūriki of the 7 tailed beast. That resembled a dragon fly. You attended the Shinobi Academy to learn to control your tailed beast. Your version of the 7 tailed beast a gen 3. So it means you have the tailed beast weapon Chichio a giant blinding spear. And you accidentally killed a student so they transported you into the hidden cloud village and no one likes you there but you still attend school