like they’ve been trying to get Chennin home since like chapter 60, and she’s pretty much been entirely forgotten about atp

Merson's underling's are threatening this guy (he's the one mentioned at the beginning that wrote a letter to the original Erina) to find Erina. Well, this Guy has a hobby.
His hobby is torturing, mu*dering and raping women. Even after they die. (So he's a mu*derer, rapist and a necrophiliac.) They are threatening this utter piece of tr*sh, saying they'll give him so many days to find Erina, and also mentioning they can smell the blood and see? At least 20 women who he had mu*dered.

. But she's not alone. She's having s3x with her "husband". He's a nasty, old, and fat man. So he's being mean, questioning her about Sezaine, and when she'll have the deed in her hands etc, all while having s3x with her (it's descriptive). He pulls out and finishes just as she's hot and bothered, says something else and then forces her to do an*l. Once he's done, he says something about not letting her have his seed until she gets the deed, washes, gets dressed and leaves. Do NOT feel bad for her though, because she abuses the maid that came to help her AND THEN MAKES THE MAID DO ORAL ON HER. As this is happening, the utter piece of tr*sh walks in. He's the oldest son? Of her husband. They have a conversation (I skimmed because the whole thing is just disgusting), Chenin asks something along the lines of how would the husband/father feel if he knew that his son and concubine regularly had s*x, some other words were said, then he leaves the room. On the way he's thinking about a woman he had mu*dered and r@ped.
The underlings show back up, ask if he's found Erina yet, threaten him again and leave. He goes back into Chenin's room, the poor maid is STILL being made to do oral on her. Not sure what happens (because I skipped down a paragraph or two), but then he starts having s3x with Chenin and mentions that he needs to find a woman. Descriptions of s3x. Chenin asks the name, he tells her. Chenin stiffens up, stops having s3x with him, gets b1tchy and calls Erina names. He then forces the poor, poor maid to do oral on him as well, while Chenin tells him about Erina.

Merson's subordinate m*rders him in chapter 28. Only thing was, I thought it was too quick. The second subordinate even says it was too quick.

Merson and Erina have their first time.

Just read for smut. Save yourself the headache of trying to understand the plot (because you won't). Unreliable narrator? Writer? Translator??? Some mix of all these points makes every character unlikeable. You can't trust the MC since she nor the author seem to know who she is, what she likes, or what to focus on. The only thing that you can believe about her is the undeniable stubborn nature she has about a side character, the Village Head's daughter. MC needs everyone to know how this side character is a back stabbing b. Or how they have to "convince" side character to give up on forcing her father to not give away his plot of land to another vicious side character. Along the ride is hot handsome sadistic ML who got manipulated by MC in the brief months of memory loss only to get addicted to "loving" MC. In book novel world, ML, OG Heroine, and other dude you will not care about are in a s*xy times love triangle. Find out about over 120+ chapters later, ML and other dude raised OG from infant hood and are still participants in this pseudo in*est fest. None of this matters to MC because she truly believes OG Heroine is sweet and innocent until she gets dr*gged to get trained on. Oh but don't worry, we still have to capture village head's daughter. Even after a traumatic event, MC won't forget her sworn duty.