Reni Milchstrasse is the most perfect girlfriend for Oogami Ichiro. Why? Because Reni and Ohgami are the complete opposites of each other and opposites attract. Besides Reni's stoic, gloomy and creepily quiet personality and complex computer-like mind is a excellent contrast to Ogami's sly humor, cheerful attitude, awkward optimism and simplistic mind. Moreover, they are both strong-willed, single-minded tacticians, strategists and soldiers who seriously care for their own teammates. They are also skilled professionals on the battlefield and both have a sharp and keen mind for strategy.

Without him, she never could and would have been able to become more like her true self which the experiments had suppressed for so long that she has become a cold and unemotional machine. Ohgami helped them solve their problems too, but none were quite the same as Reni's. In example, he helps Iris deal with her loneliness, Maria with her sense of loss in a captain, Kohran with her traumatic past, Sumire with her fear of spiders and Kanna with fear of snakes, and Orihime reconcile with her estranged Father. However, Those are situations that they themselves could overcome in time. But it seems that only he was able to free Reni. If he hadn't been there, she never would have been saved.

Furthermore, Ogami was the one who has brought such liveliness and warmth to Reni's cold, reticent and stoic personality, thus changing her forever. So there you see Ichirou Ohgami and Reni Milchstrasse are absolutely and totally perfect couple.