a "Coffin Princess" who appears to be a toddler about two years old, but has an uncanny resemblance to Riku's dead aunt Amane. Neene was hatched from a cocoon at the start of the story, and grows at a rapid rate, experiencing a growth spurt triggered each time she uses her powers in a Kanshu fight. As the series progresses, she demonstrates various powers, such as turning Riku into a Kanshu after he is mortally wounded in a fight as well as creating a giant ball of light that disintegrates anything it touches or envelops. She is eventually revealed to be a Kyuki, a queen Kanshu who receives the memories stolen by other "drone" Kanshu, and her growth is directly linked to the absorption of additional memories. She has recently gained more power and is capable of manipulating memories and manifesting wings and has left with the source of infection. During the battle of the rubble tower she fought off ende but was seemingly killed off protecting Riku. Due to her two protectors' close proximity, Neene has started calling Riku "papa" and Rena "mama". After realizing his feelings were for Amane despite her feeling being for him the most important thing. Her last words were "Liar." She later reappears about three months after the incident at the rubble tower, having already grew up into a teenager, close in age to both Riku and Rena, and established a living quarters inside an abandoned building overseeing the city though no motives for her return and where she vanished to after her fight with Ende have been disclosed, as of the moment. Her most recent growth spurt can be speculated to be due to feeding off the cores from inactive Jinki users slain by a "kamogari" or black kanshu, which it returns to Neene's side to deliver her the cores and keeping her company as a way to protect her. When this black kanshu slaughters some Jinki users whom Riku made friends with, he follows in pursuit alerting Neene of his presence. Neene, then, has the black kanshu to lure Riku to where she is hiding much to the boy's shock and skepticism once she finally reveals her new self before him. Neene's current form, after the three months time skip, suggests that she has developed a yandere-like personality given that her eyes now look vacant and dead, but still she affectionately fawns