Keiji is a man who cares about his fellow crew members, who he wants to protect at all costs, as well as humans in general. The latter is shown when he jumped to save Hong , his enemy, when she was being attacked by a Terraformar inside the Annex I. Different from his fellow crew members Marcos E. Garcia and Akari Hizamaru Keiji is rather prudish around women as he was visibly uncomfortable with the prospect of drinking Echdina milk from Peggy Fortie's stomach and visibly embarrassed by the sight of a nude Xi Chun-Li. He also refuses to hit people, keeping those words even when Xi damaged his ribs as well as one of his testicles, such belief coming from his father, teaching him how he must be strong in order to help anyone, even those who don't have anything left but violence to go forward in life.