Masumi Itari (Mah-soo-mee E-ta-ree) is the protagonist of the game, and The Ultimate Lucky student of this Danganronpa. Her voice is kind of like a calm, mature voice but at the same time energetic and motivated. She basically sounds like your generic Female Protagonist. Kind of like a mixture of Kaede and Komaru. 

Edit: It is NOT E-tar-ee, it is E-ta-ree