MTL - The Enchanting Empress Dowager is Really Poisonous - ~ 锦 Iku Ban (below)

Cassidy Calista never begged for love.Not even from Ezekiel Salvador, the cold, enigmatic heir to the world’s largest pharmaceutical empire.Their marriage was built on power, not passion. Four years of shared silence and a single rule: Fall for someone else, and walk away.So when Cassidy caught Zeke with another woman, she didn’t wait for an explanation. She filed for divorce.And vanished.What Zeke didn’t know? She left pregnant.Now, after four long years, she’s back. And she’s not alone.By her side walks a little girl. Bright, curious, with the same defiant spark in her eyes as Cassidy once had.Zeke watches, frozen. His world tilts.Zeke had spent every year trying and failing to forget her. But the moment he sees her again, something inside him snaps. The fire he buried returns…And then he sees him.A man. Tall. Steady. Standing too close. Speaking to Cassidy in a voice only intimacy can shape. The little girl runs to him, laughing, and he catches her like he’s done it a thousand times.She says nothing. Offers no explanations. And suddenly, Zeke is no longer the man with all the power.Because now, he wants answers.Whose child is she?Has Cassidy moved on?Is she married to another man?And the most terrifying question of all, Is he already too late?

Su Shuilian was the first legitimate daughter of a renowned embroidery family, but she was murdered by her jealous family member. After death, Su Shuilian’s soul enters an unknown female body who lives in a dynasty she had never heard of.

While trapped in the wilderness with her wolf pup companions, Shuilian picks up an assassin who was betrayed by his organization and saves him from the brink of death.

After making it out of the dangerous forest, the two travel to a small town with few inhabitants. There, they find a location with a picturesque scenery and disguise themselves as a married couple to buy a house to settle down in.

She was a girl unfamiliar to this world, and he was an infamous assassin. Journey with them as they adapt to their new life…

- Description from Novelupdates

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

I’ve had enough of being transmigrated into books.