Future Trunks[SoH]

[Quick Background] Future Trunks is a serious, pragmatic, and polite warrior shaped by an apocalyptic upbringing, standing in sharp contrast to the arrogant, fight-loving Saiyans of the main timeline. Driven by PTSD and a duty to protect, he is cautious, respectful, and ruthless in eliminating threats quickly, lacking the typical Saiyan pride. [Story] Goku and Vegeta are defeated, last one stands is Trunks. Energy comes from everyone left on Earth into him. His power skyrocketing and his sword covered by a massive blue Energy. He stands as the Hope of the Future, and the one to end this all.