MTL - I Have a Big Problem with My Achievement System - Chapter 279 What do you expect from the treasure chest?

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

When Yao Ling saved a handsome man, she never thought that there would be a day she would propose a marriage to him.

Hypnosis, Time Stop, Eyes of Lust...Just why do I have these skills?!After almost dying, he was reborn as the demon king of lust.Since the world is against him, there was no reason for him to be a good person. Especially since the entire world was hunting him down in the first place.So he decided that he would destroy the world in his own way as the demon king.

In Bleach, with mediocre talent, the protagonist has been flatlining for thirty years. But with the sudden completion of the Zanpakuto conception, he has become a “sword person.”Unlimited Blade Works, essentially “unrestricted swords.”Since Soul Society does not allow two identical Zanpakutos to exist, then I just won't use my Zanpakuto, and that should be fine, right?Who is the strongest in the Zanjutsu category: Zangetsu or Zangetsu: Black?Who is the number one in Assassination Techniques: Ichimonji or Suzumebachi?Which is stronger: Kinshara or Senbonzakura?Can the Yami no Tachi Shura and Yami no Tachi Rasetsu compete for the title of the strongest Zanpakuto?Unlimited Blade Works, essentially “swords,” all the “swords” in the world are mine. Yamamoto, even you, the head of the 1st Division, “Black,” cannot take away my “swords.”