MTL - The Puppeteer of Academy City - Chapter 38 explain

In a world where supernatural creatures are forced to hide behind the scenes, they are forced to stay in the darkness, never revealing themselves to the light of the world. But what if the world itself changed?A world where such creatures didn’t have to hide; instead, they reigned supreme. That is the world Liam Lycann has been thrust into. And as a fellow supernatural creature himself, he is forced out of the darkness and into the light.In a world where monsters rained from the sky, changing the social hierarchy of the world, Liam must survive this apocalypse. He must begin his journey to level up. But can the creature that ascends this new world to be the strongest possibly be a werewolf?

SMUT & HAREM!Damon was reincarnated into a magical fantasy world with his previous life's memories intact.Damon became the a half Primordial Incubus Demon- Half Divine Dragon and was the son of the Grand Duchess of the Divine Demon Empire.At this moment, Damon obtained the Divine Sign- in system.[ Ding! Congratulations for Signing in the Body Of Chaos ][ Ding! Congratulations for Signing in the Eyes of Oblivion ][ Ding! Congratulations for Signing in the Divine Blood-soaked Sword ]Watch Damon's adventures as in the Mythological World of Austonia as he slays all his enemies on the way to becoming the strongest of them all.( There will be SMUT )

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

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.