My Nerd Girl.

After her twin sister, Fara, committed suicide, Rea decided to find out the cause of Fara's death by disguising herself as her sister. However, the investigation did not go smoothly and actually resulted in disruption in his life. Starting with his mother, Rianti, who started experiencing frequent mood swings. Fara's best friend, Suki, apparently hates her, and the guy Fara is secretly dating, Reyhan, starts to suspect her.