Isekai Maou to Shoukan Shoujo no Dorei Majutsu - Volume 9 Chapter 2 part1-9

He’s the apathetic, sinister school prince, she’s the silly, joyous new student.

When the simple girl meets the sharp-tongued boy——

Gu Zichen: “Su Niannian, are you a pig!!!”

Su Niannian: “….can you communicate properly, and not attack people like this? Even if I am a pig, then I’m a precious and unique pig!”

When the wounded girl wants to escape from the oppressive boy——

“Caring for precious animals is my duty.” Merely one heartless sentence, and he carries her directly home.

But why did he need to care for her all the way to bed, hey!!!

- Description from Novelupdates

A young boy named Bai Wu was saved and adopted by a thirty-something police sergeant named Xu Lan. It was love at first sight for Bai Wu, and once he started getting older, his heart yearned for a taste of the forbidden fruit – the romantic love of his adoptive father. The question is, will Xu Lan ever reciprocate? With deranged serial killers, parallel dimensions, time warps, dragons, and a bit of ancient black magic, Bai Wu and Xu Lan are caught in a series of crazy adventures while discovering what they truly mean to each other. This is a story of lust and madness!

Lu Miao: “I counted, you will die in three days.”

Gu Erye: “With your good words, I’ve lived enough.”

Turn around and find a dragon in the feng shui cemetery.

Lu Miao stretched out her hand, “Wait a minute, I am familiar with this business, and the fat and water will not flow into the field of outsiders.”

Three days and three days later, Gu Erye was in a hurry, “When will I die?”

Lu Miao, “Don’t worry, right now!”

Three months later, Gu Erye was alive and well, his face flushed and he squeezed people into the corner, “Miao Miao, you saved my life, you must be responsible to me.”

Lu Miao, a top metaphysicist, somehow transmigrated into a poor little boy who didn’t love his father or mother, and he even gave him a dying fiancé as a gift.

Her parents expected her to die, her brothers and sisters in the Gu family hated her, and everyone in the city was waiting to see her laugh.

Lu Miao has a talisman in her left hand and Feng Shui in her right hand, playing with Feng Shui.

Big shots from all walks of life came to the door one after another, “We are willing to pay ten times as much as the Gu family’s bride price.”

Brother and sister of the Gu family, “Get lost.”

Gu Erye, “Thank you for the invitation, I have received the certificate.”

- Description from novelbuddy

A spin-off of Lillia and Treize, Meg and Seron is a high school adventure/mystery/romance/comedy of sorts taking place in the rough equivalent of the 1950s. The story follows Seron, a stoic and handsome bookworm who is in love with his classmate–a sweet, oblivious transfer student named Meg.

Meg and Seron takes place at around the same time as Lillia and Treize, but knowledge of the main series is not necessary to read Meg and Seron.