WMG / Phantasmagoria 2

Phantasmagoria 2 is a harem story that gets hijacked by a horror story

Curtis is the bland Audience Surrogate that somehow manages to get almost the entire office to have the hots for him despite being a complete loser, Jocelyn is the wholesome yet flavorless First Girl, Therese is the flirtier and more forward one who's Jocelyn's direct rival. Trevor is the best friend who Cannot Spit It Out and who everyone wants to see get with the protagonist, but doesn't in the end, and Bob (according to his actor) is the Tsundere who acts like a complete asshole to the protagonist because he can't admit his real feelings to himself.