Notice his appearance: pale white skin, snake scales, horns growing from his head. He looks less like a ninja and more like a yokai (Japanese demon). He has shed the skin of humanity. He believes he has evolved beyond emotion.
After the loop ends, Kabuto emerges from the darkness not as a monster, but as a broken, weeping child. He is no longer "Kabuto of the Snake." He returns to the Konoha Orphanage, where he becomes the caretaker he was always meant to be. kabuto death episode
But Itachi’s Izanami forces the cave to become a mirror. The walls reflect not Kabuto’s current power, but his past weakness. The loop shows him the exact moment he chose to stop feeling. And that is the real death: the death of his delusion. Notice his appearance: pale white skin, snake scales,
(Episodes 335–336) : These episodes explain his tragic past at the Konoha Orphanage and his descent into becoming a spy for Danzo and Orochimaru. What Happens to Kabuto? He believes he has evolved beyond emotion