End of the Magic Era - Chapter 1410: Strange Visitor

She was a famous assassin who had killed important figures, but ironically, she was killed by her own lover.And when she thought she was dead, it turned out she was occupying the soul of a young girl who was tricked by her own family.'Because I have been reborn, I will take revenge on the people who planned my murder and also teach a lesson to the people who underestimated the girl whose soul I reside in!'However, things become complicated when she has to marry a cold man, whom she spent the night with.

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates

It is the year 2050, One of the world’s greatest assassins had fallen. Will his successor continue his legacy?

You, an ordinary human, transmigrated into this world along with a City-Destroying Calamity—Blood Moon.Just when you thought you could rise to the top of the world by awakening a system, you received the following mission:[Do not harm any living being for 10 years][Reward: Unknown God-Tier Reward]...Ten years later, during the Awakening Ceremony—“Hahaha! This loser actually awakened an F-rank talent—Furniture Craftsman!”“Looks like our academy's carpentry workshop finally has someone to carry on the legacy!”[Ding! Congratulations, host. Mission complete. God-tier reward unlocked.][Ding! Host has obtained: Infinity Skill Points. You can instantly upgrade all skills to their MAX level.][Ding! Host has obtained: Infinite Plunder. You can plunder any unowned skill traits.][Ding! Host has obtained: Infinite Fusion. You can fuse all your existing skills and randomly generate new effects!]...Years later—A lean, handsome figure sat atop the frozen skies.Pointing your sword toward the heavens, you declared:“The fate of mankind shall be decided today.”And standing against you—was the very Sun, the celestial being humanity had worshipped for tens of thousands of years.Faintly, a string of symbols floated upon its blazing surface:HP: 999999999999999999