Enlisting as a Fall Guy: My School Beauty Fiancée Bets I'll Become a God

He transmigrated to a high-martial world in the year 3026 and became the true son of a wealthy family, abandoned outside its doors. The family wanted him to take the fall for the pampered impostor. He got angry for a moment, then... signed the confession. He thought his life was over, but the stunning school beauty he was engaged to since childhood came looking for him. Just as he was about to stage the legendary scene of “Thirty years in Shandong, thirty years in Shanxi!” She didn't call off the engagement or mock him. Instead, she handed him a marriage contract: “Four years. When you return from the Northern Frontier, I'll marry you.” Everyone laughed at him for being a fool, and at her for being lovesick. Just then... [Ding! Infinite Kill System activated!] Four years later, he returned, drenched in blood. He raised an eyebrow and smiled. “I heard you've been telling everyone I'm dead?” The impostor collapsed to the floor. “Bro, I was wrong...” That night, he couldn't help asking, “What were you thinking back then? Wouldn't a normal person have called off the engagement?” The school beauty blinked. “In the short dramas from hundreds of years ago, a story that starts like yours always means you're the protagonist!” “And what if I'm not?” She answered confidently, “With a face like yours, I wouldn't lose out anyway! At worst... I'll support you!” He said, “...Fine, you win.”