Blood type: B
Height: 159 cm
Weight: 50 kg
Renji Asou who is half German, half Japanese is a protagonist of the third chapter in Ef: The Latter Tale. One day, when he goes to an abandoned train station where he often spends time, he meets a girl wearing an eyepatch over her left eye and sitting alone. The girl is Chihiro Shindo, the younger twin sister of Kei Shindo.
Despite both of them being mutually shy, Renji comes back to see her at the station every day after school and quickly becomes friends with her. He later learns that she has a severe case of anterograde amnesia where she cannot remember anything past thirteen hours previous, aside from the events before the accident which she can recall perfectly.