A Mastermind? No, I'm just the Live-In Son-in-Law - Chapter 44: Caught Red-Handed

In the year 1368, at the end of July, deep crimson shall descend from the heavens.

- Description from Novelupdates

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

I transmigrated into the body of the Villainous Young Master.Why am I a fake while everyone else is real?!The real Young Master wants to oppress me. Even my fiancee wants to break off our engagement.Bring it on, then!Just when HuMing was about to beat up the b*tches and scumbags, the gazes of the girls around him became increasingly strange.“Didn’t we say only to cooperate?”“Well, we’re just here for our payment.”The gentle smiles on the girls’ faces made HuMing weak on his knees.

Sa Bina was on her way to write her SAT when she suddenly finds herself in a strange world. She is sent to be the old emperor’s concubine, but on their wedding night, the emperor gets murdered by no one other than his own son and the heir! To survive, Bina makes a deal with beautiful but deadly Lucretius and her life in this dangerous kingdom begins.