Trapped as an NPC in a Dating Sim - Chapter 1: Mission: Underwear!

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

He is a legendary business powerhouse, a King with a business empire. She is just an ordinary female student. A deal, – a paper marriage, a marriage for four years. Four years later, she turned away fearlessly. She thought that their path would never cross again, but he took her in his stride and refused to let go of everything about her, even interfering with her getting close to other men!

“Luo Yibei, we’ve already divorced! We’re finished! Over!”

“Yeah?”

She had to ask what he meant.

And he shoved a small bun in her bosom with a look of disapproval.

- Description from Novelupdates

With unmatched talent, but a fate sealed by a terminal illness, Jeong Yeon-Shin challenges his destined death for a chance to live.Set in a realm where elves and dwarves coexist with martial artists, this is the story of Jeong Yeon-shin, a genius fighting to extend his life against all odds.

Zhulan, in a transmigration novel about a supporting female's counterattack through farming, managed a triple leap: getting married, bearing children, and becoming a mother-in-law. The point to focus on: She became the wicked mother-in-law from the counterattack stories.From 26 to 36, not to mention, with six kids in tow, two daughters-in-law, a few grandkids, and a still-living husband—emphasis on the fact that he's not her original spouse, but the one who trapped her into transmigration.Only after becoming the original body did Zhulan realize she was miserably tricked by her two daughters-in-law. The elder daughter-in-law had a loud voice, complete with a 'brain-enhancing' feature—it turned every little issue into a big deal once it reached her mouth.The younger daughter-in-law was timid and weak, bursting into tears at the drop of a hat, perfectly crafting the image of Zhulan as a wicked mother-in-law.Zhulan, “.......This life is really unbearable.”Someone, “You still have me.”Zhulan, “Ha, you're the one who screwed me over the most!”Someone, “......”