Nattsu is a supporting character from the anime Aishiteruze Baby. She is a female student at the same school as the protagonist, Kippei Katakura, and is depicted with short orange hair and orange eyes. Nattsu first appears among the many girls that Kippei casually flirts with at the beginning of the story. Her initial attitude toward Kippei is one of disinterest or dislike; she does not respond to his advances and keeps her distance. As the series progresses, Nattsu begins to develop romantic feelings for Kippei, though she comes to this realization too late. By the time she acknowledges her own emotions, Kippei has already shifted his focus and affection toward Kokoro Tokunaga. This unreciprocated change of heart defines her role in the narrative: she serves as one of several minor characters who illustrate Kippei’s early playboy tendencies and the emotional consequences that arise from his behavior. Nattsu does not undergo extensive personal development beyond this romantic awakening, nor does she exhibit any special abilities or talents. Her significance lies primarily in her brief, one-sided connection to Kippei and the subtle reminder that his earlier actions affected the feelings of those around him.