|Series:||AKB48 Murder Mystery|
|First Appearance:||File 3|
|Last Appearance:||File 5 (Cameo)|
|Number of Episode|
|3 (3, 5, and Testimony File)|
Sasaki Yukari (佐々木優佳里?), nicknamed Yukarun (ゆかるん?), is part of AKB48's Research Students (Team Kenkyuusei). She is one of the primary characters in AKB48 Murder Mystery series. She was based on and was portrayed by Sasaki Yukari.
All 89 members of AKB48 went to a duplex island owned by one of Akimoto Yasushi's friends for a CM Shoot. After their first day shoot was over, they went to their designated resthouse on the other island. It was assumed that she heard that Kato Rena was missing and was shocked to learn that the scream they heard was from Sashiko finding the girl's lifeless body in the dining hall.