Ninja Marriage Alliance: I'm an Immortal Emperor, and My Wife Is a Killer

(P.S. This is a dark take on Naruto. Don't read if that's not your thing~~) After transmigrating to the ninja continent, Duanmu Youran will climb to the peak over mountains of corpses and seas of blood, becoming the Six Paths Immortal Emperor. Just as he is about to break through the barriers and leave the ninja continent, the world's rules suddenly choose him to participate in a ninja marriage alliance. Seeing a familiar name among the female candidates, he curls his lips into a faint smile. “Ye Honglian... It's been ten years. The little girl has certainly grown up!” So he gladly accepts. As the top female assassin in the underworld, Ye Honglian happens to be chosen as a female candidate for the ninja marriage alliance after completing a mission. But she doesn't want to become the plaything of those perverted ninjas. She will decide her own fate! So, when Ye Honglian sees the young man who looks like the weakest candidate listed in the marriage alliance System, a daring idea comes to mind: “If I kill that ninja, I won't have to marry him, right?!”