Lupe's Manga

An unfamiliar world that suddenly fell. Unfamiliar language, a zombie called Mannock, an uneven situation. A man who appeared when even hope was lost in repeated despair.
"A stranger?"
She was the savior she met. Baek Hee-su, who wants to return to the original world, picked up a woman who needs a lot of hands in many ways. What should I do with this woman?
“If I think you're waiting for me, I think I can do anything. Anything to come back to you...
"Mercenary and mysterious man who hunts Manoc, Kalix Clovis"
"I will never meet you again when I arrive in the city."
"Okay?"
He carefully held her hand holding my forearm. His bright blue eyes stared straight at her.
"Until then, stay by my side."

I witnessed the novel's villain murdering someone - and even got caught witnessing it! I can practically hear the bell signalling the end of my life ringing. However, what he gave me was... "Marry me." A ring. One with a huge gem at that! What's going on here?! Is this not better than dying, My Lady? Let's get married. My newly-wed life with the villainous lead begins now!
-

I entered the world of my favorite novel and genre through someone else’s body.
Of course, out of all the characters, I just had to enter the body of the protagonist’s aunt, the woman who abused her nephew, the selfish villainess.

According to the original storyline, in any case, my nephew was expected to leave my side soon.
Compassion for him grew, so I put my most sincere effort into tending for him until the day we parted-

“I realize it is rude in asking since you have been taking care of Luca until now, but may I take Luca to Winterwald with me?”

There’s no way that won’t happen! I mean, I suppose I could’ve rushed to send him off and then live comfortably, but unexpectedly, my nephew wrapped his arms around my waist and shouted.

“M-mom!”

How did I become his mom all of a sudden?