One of the protagonists from the series Haibane Renmei, Reki is a fascinating and genuine character who holds a cult fanbase on OT, much like the anime itself.
She initially seems to be your typical supportive big sister type, but as the series progresses we come to see more of her true self.
Despite her good looks, Reki feels truly ugly on the inside, being unable to forgive herself for her mistakes of the past.
A seemingly very strong and independant woman, who despite providing constant emotional support to her fellow Haibanes, refuses to ask for any herself.
Although Rakka is the true main character of Haibane Renmei, Reki's story and her issues are the focal point for the last third of the series. It is then her character comes full circle and the conclusion could not be more satisfying.