MTL - Great Slaughter System - Chapter 50 Universal solution

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Wang Sheng arrives in a world sealed by qi, where danger lurks at every turn. Fortuitously, he awakens a progress bar that can break through all limits, turning everything into possibility!Inner Core Skill—Refine essence into qi, the fundamental path, eternal void, achieving true immortality!Ba Duan Jin—Constructing the foundation, limitless qi and blood, rebirth from a drop of blood, the flesh becomes sacred!No Life True Void Induction Sutra—A virtual world, infinite simulation, the name of No Life, spread across all heavens!Heaven and Earth, the Ages—Control of time and space, reversing life and death!...The true immortal watching the winds and clouds is me, the No Life True Saint representing transformation is me, the one who controls time and reverses life and death is me, the one using the true vacuum homestead to harvest all realms is also me!--------------------This is a story of Wang Sheng basing on Ba Duan Jin as the foundation, using Inner Core Skill as the fundamental method, achieving everlasting life...

I possessed the body of a villain who torments the male protagonist in a tragic story and dies.Before meeting the male protagonist, I managed to endure my miserable life with survival skills and magic.When I finally met the male protagonist:“Get lost.”He bared his teeth like a kitten.But as we got a little closer,“Lila, help me.”I worked hard to take care of this unexpectedly pitiable young master.And then…“Lila, do you love me?”“What?”“I’m asking if you love me.”“…Young Master.”“I love you.”“…”When I was too stunned to respond, he smiled and approached me.“Lila, tell me you love me. If you do, I’ll give you everything I have. Okay?”It seems I raised him too well.The young master I had so carefully raised began to obsess over me.

Karl Wagner is a disgruntled middle-aged instructor at the Bundeswehr Command and Staff College. He finds himself concerned about the direction which the German nation is headed in—just as he is killed by a terrorist attack. Only to awaken and find himself reborn as an infant, Bruno von Zehntner, the youngest son of a noble family renowned for its part in the German war industry a few years after the founding of the German Empire. Bruno, as he is now known, desires to rewrite history and ensure the German Empire emerges victorious in the coming century. And in doing so, finds himself entrenched in a world filled with Blood and Iron!