Villain: Ultimate Mutation System in the Alternate World - Chapter 608 : Perfection?

A person in their third year of high school, experiences the arrival of a divorce comeback system 20 years early. At 38 years old, with a failed marriage, standing at the crossroads of the established and confused years, you recall your young days with your childhood sweetheart. After marriage, you cut off contact and have no more news of her. Re-establishing contact with Xu Qianqian will reward you with 300 RMB. Eighteen-year-old Jiang Nian glanced at the system task on the panel and then at Xu Qianqian living next door, falling into deep thought. Hmm... it seems the system came early. There is another issue: who is the future ex-wife? Hmm... Jiang Nian couldn't hold back. Being eighteen every year, he foresees a divorce in the future. The system issues a task to take revenge on the future ex-wife. Jiang Nian looked at the un-darkened version of the future ex-wife in front of him and fell into thought again. The childhood sweetheart, future ex-wife, and future ex-girlfriend, all appear in their younger versions.

Has my life been for nothing?I asked myself that question as I fell into the eternal embrace of death, having tumultuous waves of regret washing over me. But, in a strange twist of fate, I found myself awake once more in the body of my fifteen-year-old self.What kind of sorcery is this?The existence of the Leviathans and their mystical powers is all shrouded in mystery.But none of it matters to me.What matters now is that I can finally pursue the dreams and aspirations that I set aside in my past life. This time, I will ensure to live true to myself, without restraints or regrets.I will be free.Tags: Regression. Fantasy. Action. Adventure. SliceOfLife. Mystery. Time travel. NoHarem. WeaktoStrong. Antihero. Academy.

In her third year living in this steampunk world, Ciel gained the ability to simulate both the past and the future.These simulations turned into a game where she could act without restraint, and after countless trials, real life became a replica she could navigate as though speedrunning it.Churches, potions, mutations, the Old Gods, witches, sealed artifacts… none of these have anything to do with Ciel. She’s just an ordinary girl who wishes for a peaceful life.She just happens to be particularly skilled at snuffing out danger before it even begins.

Xu Yiyang, who was only late in his life when he was middle-aged, returned to 1999 in a dream.

At the turn of the millennium and the turn of the century, he realized a truth:
Not only to be famous early, to start a business and make money, but also early!
………………
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- Description from Uukanshu