Are Nisan and Rüya the same person in Eşref Rüya?

In the series Eşref Rüya, the character Eşref fell in love with a girl named Rüya whom he saw during his adolescence. Years passed, but he never stopped looking for Rüya. He waited for the day he would meet her again.

Çiğdem uncovered it

Commissioner Çiğdem found out where Rüya was. And she was right next to Eşref... When Commissioner Çiğdem investigated Nisan's past, she realized that this girl was the Rüya that Eşref had been searching for for years. And she decided to use this. By using the murder committed by Afra, she ensured that Nisan remained by Eşref's side as a police informant.

Why didn't Eşref understand?

Çiğdem realizes that Nisan and Rüya are the same person. However, Eşref does not. How is this possible?

Because; Eşref is looking for a girl with a mole on her neck. However; Çiğdem learned that Nisan had the mole on her neck removed 4 years ago. For this reason, Eşref did not realize that Nisan could be Rüya.