Why Is My Detective Story So Problematic?

My new novel is out! Please add it to your library: "Let Me Draw a Card in the Infinite Worlds" is an infinite-worlds suspense novel with lots of cathartic payback. Blurb: Fang Qingfang: I want to transmigrate into a romance novel and date a domineering CEO, not become a suspect in a detective novel, aaah! She happened to witness a crime scene and got blasted so badly her own parents wouldn't recognize her; then she transmigrated into a detective novel, only to be stuck playing a suspect NPC; What a tragedy, and such a big one! First meeting: Fang Qingfang: Oh! You're the male god I've had a crush on forever, and I mean a real, genuine crush! He Bufan: Calm down! Second meeting: Fang Qingfang: It's time to leave the past behind and let tomorrow begin again. Let the past drift away with the wind... He Bufan: Why are you suddenly talking about breaking up? Hah, women! A pseudo-quick transmigration, Old School-style detective mystery (sort of). No special cases or major crimes, just retro, classical whodunits (kind of). Okay, fine, it's really just a light Japanese-style mystery novel full of snark. A dramatic heroine who always gets her comeuppance x a cool on the outside, warm on the inside male lead whose full-time job is dishing out face-slapping Thesis: