Complex sentence: Following the end of the Shongairi invasion, humanity possess Shongairi and Hegemony technology and is fully united under the established Terran Empire, becoming a reckoning foe alongside with the vampires to the Hegemony.
Split into simpler sentences: Following the end of the Shongairi invasion, humanity possess Shongairi and Hegemony technology and is fully united under the established Terran Empire. Becoming a reckoning foe alongside with the vampires to the Hegemony.