Born in 1615 as the second youngest son of Sultan Ahmed I and Kösem Sultan, Kasim is a loyal and quiet man that loves his mother and his siblings a lot. He is scared of his older brother, Sultan Murad IV, and jealous when his little brother İbrahim ascends the throne due to a sign of allah saying İbrahim shall be Sultan after Murad's death. He is protective over his nieces and nephews and over his mother, who he's close with, like his oldest brother Mehmed