|First appearance||Devil Children Fire Book|
Rejiinu is a character in the Devil Children series.
Sister of Seku, Rejinu lost her parents in the war and has been looking for her sister. Jin comes across her while she is starving and agrees to help her find food and her sister. They come across Seku who tries to assault Jin for the mistaken notion that he was trying to harm her. Rejinu defends him and tells her sister that he was only trying to help her and wasn't planning on hurting her.