Fake Heiress: Mr. Fu's Obsession

Zuo Yi stars and the female lead seems to be very weak in the beginning. The male lead is different but similarly cold, though more outwardly violent

Same storyline with differences in details but also with two well-fit leads; will recognize the script

Both MLs have the FL pose as their sister due to her identical appearance and to enact his plot. Both MLs wear glasses and have an initially aggressive personality until they fall in love.