Kyoukai Senjou no Horizon - Volume 3, Chapter 26: Searcher in the Mist

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.

The path of immortality is nigh unachievable.Furthermore, the immortal world has been completely transformed by a plague!When immortals contact infected mortals, their cultivation bases fall, or worse, they return to the heavens; thus, the immortal and mortal realms have been eternally separated.Moreover, all immortal arts may only have one practitioner; thus, the world of immortality has become a dark forest.…Although Li Fan had grand ambitions when he first transmigrated to this world, he could only be trapped in mediocrity, slowly wasting away his mundane life.Fortunately, as he was dying, he finally awakened a supreme treasure that could turn truth into lie and reality into dream, reversing time to when he first arrived!Following this, Li Fan embarked on his endless path to immortality!In his second life, Li Fan ascended through politics and ruled the world after 50 years, but after searching worldwide, he found no trace of the Immortal Dao. Only at the end of his life could he glimpse the immortal path.In the third life, despite immense efforts and carefully laid schemes, Li Fan ultimately couldn’t resist a single strike of an immortal’s sword!In the fourth life……I, Li Fan, an ordinary mortal, will harbor no regrets throughout a thousand lifetimes, all for the pursuit of immortality!

Arthur is an Atelier who works under pressure. When the curse of the Succubus activates his Netori System, Arthur is unable to resist his desire to win a woman's loyalty. There is no other reason for him to test a woman's loyalty that is easily shaken when his Netori System is activated.