I'll Teach You, Marianne. - Chapter 519 - [Bonus ]Ingrained Evil Trait

There was a time when every living thing was decimated and the galaxy was forced to restart with a single thought from the evils.“Is the final boss my wife?” Xu Chang’an exclaimed as he looked at his wife who was making dinner and shook his head. “The system must have malfunctioned again.”Under the tree in his garden, Xu Chang’an wrapped his arm around his wife’s waist and said, “There is something I have to settle outside. I’ll be back soon.”“Okay. Stay safe.” After seeing the husband off, his wife raised her head to look at the leaves and said,“I think my husband is going to cheat on me soon. Should I… just restart this world?”

For the man’s promise, Xiao Chen returned strongly, the bodyguard of the body of the beauty president, sweeping the enemy of all directions, composing the legend of the king!

- Description from Uukanshu (translated)

One morning, Gu Tiantian wakes up to find her innocence gone—and her temper flaring.Every time she glares at him, cheeks flushed with outrage, Bai Chenyao cocks an eyebrow.“You don’t want this?” he asks, voice cool.“I never did!” she snaps.His only rule: her consent is optional; his desire is not.Cue Gu Tiantian’s inner scream: Then why even ask, you iceberg?!PS:A genius CEO with zero EQ VS. a lovable, scatter-brained clerk.He thinks courtship is a hostile takeover; she thinks love shouldn’t come with fine print.Sparks fly, clothes vanish, and the “free pie” she never ordered keeps biting back—hilariously, endlessly, deliciously.

agreed. He thought they might just talk, have a few drinks, and that nothing significant would happen. However, she invited him to a hotel, and they spent the night together.The next morning, she told him it was just a one-night stand and that they would probably never meet again. She said goodbye and left. Ronan also decided to treat it like that.The next day, at his college's hosting club, Ronan was given the responsibility of hosting that year's annual function, where they had invited a singer.When Ronan looked up at the singer, he was shocked—it was the same woman he had spent the night with. After checking her history and social media, he formed an impression of her. Every picture she posted was in revealing clothes, bikinis, or almost nude outfits.He concluded that she was just a promiscuous woman, likely driven by lust, and that she had probably chosen to spend the night with him simply because she found him handsome.Understanding this, Ronan decided to focus on his work. That morning, she had made it clear that it was just a one-night stand and nothing more. He would treat it exactly that way and carry out his responsibilities.Protagonist has System---No NTRIt's Harem, with many girls but The Singer is Main Heroine.