
Do you read BL? https://www.mangago.zone/read-manga/the_beast_must_die/

Honestly, reading your comment, I hope she eats(kills) him by the end of it all like a praying mantis herself, becoming the very thing she hates while he never gets the satisfaction he wanted of seeing her truly at her lowest. Tho that'd be too much to ask for Ig, given if she's attempting to kill him by the end, she's likely already damn miserable.

Oh, I thought he just wanted her "miserable, sad face" because that's what caught his attention and also didn't he take a photo of her crying in her sleep when she sleeping at his office sofa or smth? Anyways, either way, I hope THIS author doesn't get stupid death threats like The Guy Upstairs did because they wanted to make a thriller horror but fans wanted to have a romance between Adam and Rosie ╥﹏╥
So MC also sees people as caterpillars... They are a match made in heaven. Also I think the scene when she kills mantis with a rock while it eats a caterpillar is prothetic. Mantis is obviously Inseop.
Stories about psucopaths is my weakness, so I like this one.
The detective is super annoying though...