He is an intelligent and logical individual with a penchant for beautiful things, the thought of exuding anything but beauty through his actions causing him to dramatically lose his cool.He is also quite comical when he lets his self-doubt get the better of him. He is, however, a hardworking and determined individual, as seen in his relentless drive when learning to swim despite several failed attempts.
Rei has a theoretical approach when it comes to sports,as he usually calculates distance, angle, and other factors in his mind before actually making an attempt. Because of his rigid nature, he has a tendency to overlook the fun and enjoyment that comes with the activity. As Haruka told Rei, he needed to be "free" in order to swim properly, because he is constantly calculating and underestimating the water. He has a unique laugh that is easily identifiable.
RELATIONSHIP STATUS: Single. || CURRENT RELATIONSHIP:Nagisa Hazuki. Taken: --/--/-- || Engaged: --/--/-- || Married: --/--/--
Comments: Looking for a main.
They both belong to a same class in school and take the same train line to go back home. Nagisa often goes to Rei's home and hangs with him most of his free time. They're often seen doing things together.Nagisa often falls asleep on Rei's shoulder on the train ride home. Rei easily gets manipulated by Nagisa for some reason.
Like all other members of the Iwatobi High School Swim Club, Nagisa calls Rei "Rei-chan", adding girlish suffix "-chan" to his name.