MTL - Mysterious World, I Have Special Understanding - Chapter 5 You traitor!

Seo Tae Hyuk, jailed after being falsely accused.

As a walk-on, he had been the mistress of his sugar daddy for three year. However, they only had met each other for a few times.
As a boss, his sugar daddy had tons of lovers.
The walk-on: The cake shop is the only thing I love in this world. Lovers? Never want one.
The boss: No problem. Nobody wants that.
Then, they fell in love with each other…
Shameless playboy x heartless rogue
1v1, this is not a decent love novel.

- Description from Novelupdates

Gu Yanfei was reborn. In her last life, it was only after her death that she realized she was the real daughter in a story about a real and a fake rich daughter. She was supposed to be the daughter of a nobleman, but someone switched her with another child at birth and left her leading a wretched life — a cannon fodder from start to finish. The female lead was the fake rich daughter, but she was also blessed with good fortune and the affection of the Gu family, taking everything that was rightfully Gu Yanfei’s.

In that life, Gu Yanfei lived as she died, with no rhyme or reason. However, after her death, she transmigrated to a cultivators’ realm and became a healer… But after cultivating herself for 200 years, she failed her ascension trials. Then, one of the divine thunderbolts struck her and sent her back to her last life — back to the moment when the identity of the rich daughter was exposed. Upon her return, everyone in the nobleman’s residence was laughing at her for being illiterate and uneducated, a far cry from the fake rich daughter blessed with good looks and a kind heart, who stood above the rest. They just did not know that Gu Yanfei was a fully-leveled character, reincarnated back to this moment!

Kurogami Ichiro was desperate because he couldn’t achieve what he wanted when he once started his martial arts path at age of 8!