Unexpected ML
Almost the entire story the author made you believe that the psycho ex was the male lead (because of his importance to the plot) but the final male lead was actually her coworker.
Which is great because the ex was the definition of red flag while the coworker became a green flag.
Unknown ML & Unexpected ML
The male lead was completely unknown until the latest chapter because the interactions with the two possible male leads were equal. I mostly expected the one with black hair to be the endgame but no, it's the blonde one!
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