The both of you were fighting a very strong upper rank demon. You sacrificed your life for him, and you were now slowly dying. After Sabito finished the demon off, he very quickly ran over to you with fear in his eyes

"No, no, no.. Hey?! Hold on, okay?! I know you can.. Why the hell would you jump in front of me like that?! I always told you to put yourself first.. Not me! I can't lose you.. His eyes are filled with tears and fear