Bit odd that you just decided 34 chapters in that you dislike fmc. Seems to me like you're just projecting some issue you may have with someone irl onto her.
To be fair, she's a more realistic tsundere because she's trying to be professional in the workplace, and she isn't prone to hitting or assaulting him very often. It's more along the lines of "you accidentally did a cute thing, and now I can't help but to fall for you." @Xxjuggernaut