MTL - The Group Pet Goose is the White Moonlight of the Paranoid Boss - Chapter 379 High school math Olympian champion

Arnold never thought his gaming skills would land him in a romance novel—as a doomed side character, no less. To survive, he hijacks the heroine's “system,” bending the story to his will. But when he dodges a deadly duel, he catches the eye of the heroine, Lara, his own step sister—and her love is a dangerous game. Arnold must outwit the plot and his step sister who's not afraid to kill for love. In this LitRPG romance gone wrong, survival isn't just about beating the system—it's about escaping the heart of a yandere.

Xuanyuan was reborn into a strange new world where training to be a Xian was a cornerstone. There was however something ancient dwelling inside his body. He could now devour all of creation…

This is the journey of an ordinary boy and his transformation into the supreme being that reigns over all existence! Everywhere he went, he could not help but tie his fate with numerous women. It did not matter whether they were a goddess or a devil…

- Description from Novelupdates

On her wedding day, she was humiliated; her status as the legitimate wife was instantly changed into that of a concubine.

When Astrid transmigrated into the fantasy webnovel she once read, she found herself in the shoes of the story's most hated villainess, a character destined for a tragic end.According to the original plot, the Main Protagonist is hell-bent on killing her at all costs, her cunning step-sister schemes to throw her into the dungeon and usurp the throne at the first opportunity, and even her loyal caretaker has abandoned her.With enemies on all sides and time running out, Astrid realizes her fate is sealed unless she takes matters into her own hands.Determined to survive, Astrid decides to fight back, but as she begins to navigate this world, something feels... off. Why is the Main Protagonist, now showing her unexpected kindness? Why is her step-sister, who should be plotting her downfall, suddenly seeking her favor?••••••It's a yuri harem novel.