Mountain Sitting Immortal - Chapter 26: Instructor Canes.

Sam Sanderson is envied by many for his job, however he himself didn't seem to like it much.

Due to his expertise in nanotechnology he was tasked with monitoring the state the Valkyries, humanity's strongest weapons who all just happen to be made into gorgeous females.

Forbidden from even touching any of them, Sam spends his days in agony watching flowers he couldn't hope to touch. However one day all of that seemed to change.

Utsuro no Hako to Zero no Maria, or The Empty Box and The Zeroth Maria, tells the sinister story of Kazuki Hoshino, who is almost madly attached to his everyday life, and his antagonist Aya Otonashi, who suddenly transfers into his class—for the 13,118th time. She majestically announces to “break” him, without paying heed to anyone else around them.

Ever since an NPC named Shu ChunChun, who had been taken advantage of and used carelessly by the world-hoppers, awakened her consciousness, she knew that the only way to drive out the world-hoppers was to make them fall for her, HARD.

- Description from Novelupdates

Susu, a hard-working woman, accidentally finds herself in a novel set in the 1980s, stepping into the shoes of an unlikeable female lead who was resented by everyone in the family compound for causing endless trouble. She became Su Er Ya, the demon sister who threatens her husband to divorce if he dares to adopt the orphan of a comrade-in-arms. With such an unfavorable start, watch how she turns the tide. From selling braised goods to opening a restaurant, her career thrives, and in turn she becomes beloved and known for her magnanimous personality. Lu Xiaoting, a stern public security officer, realizes that the once lazy and gluttonous woman who took advantage of others has changed.Lu Xiaoting, embracing his wife: “Wife, don't be mad, I was wrong!”Susu, looking at the man with broad shoulders and a commanding presence reminiscent of a modern-day celebrity, smiles sweetly. She triumphs by mastering the culinary arts.Witnessing the transformation, their son Xiaoyu leads the three little 'turnip heads', Su's adorable children, who pout and complain about their father taking their mother away yet again.Whining, “Hate it, Daddy took Mommy away again!”“Ugh, Daddy really...!”“Big brother, we want Mommy.”The young boy comforts the three younger siblings gently: “Be good, Dad and Mom will be back soon.”