I'm at Level 30, But I Can Slay Level-9999 Beasts in One Hit! - Chapter 19: Level 15 Set

A great demon king who came from another world to conquer Earth. To save the Earth, Li Luyou could only first take care of this great demon king… a little girl proclaiming herself Her Imperial Princess.

- Description from Novelupdates

Transmigrated into a trash body of general's daughter as female lead? Peh! Too mainstream! Transmigrated to be a villainess? Common! What about transmigrating and ending up as cannon fodder? Have read it before!

Introduction: Zhao Si, one of Wall Street’s rising rookies, has been reborn. Knowing the trend of the times, he wants to make his corrupt official father change his ways…

(ps: This story is purely made up, if there is any similarity, it is definitely a coincidence, and it is not aimed at any individual or group organization.)

- Description from novelbuddy

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?