MTL - Salted Fish Zombie - Chapter 131 memory

The heck? l got reincarnated as a prince in another world!I have a system as well?[Choose class][Fiend Or Human Class?]Fiend Class.Choose the class from below.[Milf Manic][Blood Kin Copier][Plunder Sucker][10X Milk Man]Yeah I choose to become the strongest!On the other hand, why is my maid so cute?“My prince~ not there!”

She is the underworld Ghost Doctor’s only disciple, who accidentally transmigrated into the body of the main wife’s daughter in the general’s mansion. She used to be a punching bag.Now, she stepped on her dregs of an older sister, put her father’s concubine in her place, and teaches any objectionable aristocratic ladies a lesson.

Her days are rather free and unfettered. But when did that cold as ice prince from the rumors, sporting a deadpan face all day long, fix his gaze on her?
He unexpectedly fawned and pandered to her like a devoted dog?

“Go away, you rotten man! Careful or I’ll needle you like a pin cushion!”

“Wife, why are you so fierce? As a husband, I’m so scared”
….the man is all smiles as he approached, his eyes gleaming with a cunning light.

- Description from Novelupdates

Ethan possessed everything one could desire, wealth, happiness, luxury cars, and a loving girlfriend.He had never fought a day in his life, but then suddenly, he woke up in a different world.A world were destruction and bloodshed was the norm. A world where the weak had no place to survive.Ethan now possessing the body of a boy who had failed his awakening twice and was on his last try, now stood in this world.Can Ethan who never fought a day in his life survive in a world where battles and death occurs every second, minute, hour and day.Would he rise through the ashes of the world, or would he burn with it.

The second prince has come of age. To celebrate the advent of such an occasion, the search for a suitable bride began. My younger sister was expected to go to the Royal Palace as a candidate. However, despite this, she eloped the day before her departure. I, the older sister she left behind, looked almost exactly like her – so much that we were often mistaken for twins…

One month, right? For just one month, shall I substitute in for my sister?