I was about to ask why the worst character gets such a cute chapter... but I've read these over such a long span of time and have such a crappy memory that I got two characters mixed up and was thinking of Kaoru and not Shizuka. Glad I went and double-checked!
Kaoru's the hot bag of trash that doesn't deserve happiness. She should be unceremoniously yeeted into a dumpster, pushed out to sea, wash up on a deserted island, and spend the rest of her days dodging a coconut-throwing monkey that also wants her to go away.
Honestly, I felt kinda the same for Chie originally. To the point where I was kinda hoping the author would pair the two unlikable characters together and then introduce them to Truck-kun. I think it was around when she stopped putting her hair up that I started liking her more. But Kaoru? She's a lost cause.