Hey there, pal! Just a warning: this page contains spoilers about the visual novel. If you haven't played it yet, I'd advise to don't read much further. Read at your own risk! Have a nice day.
Rinne Byakuya (白夜 凛音) is the main heroine of Euphoria's and a student at Rokukeikan Academy.
In Episode 6, she becomes Keisuke's wife and has a daughter with him.
Appearance
Byakuya Rinne is described as a very pale girl that is also very nice, she has slender member and long black hair described as amazing. She always wore a composed face.
She is almost all the time wearing her school uniform which consists of an traditional sailor uniform with black knee-high socks. However, when she take command of the strange cult, she is wearing a black bure richly decorated.
Warning : Spoiler Ahead
In the true end, she is closer than a machine than a human, she is thinner than before, had both her arms replaced by mechanics one and she possesses a lot of strange hair looking at baby hands that she is able to fully control.
Personality
Rinne appears to be a very quiet girl that never express her feelings, even in the more awful situation. She always appears to be calm and Keisuke is not able to read her detached expressions.
Warning : Spoiler Ahead
However, she appears to be the leader of a strange cult that schemes against Nemu's order. In her own path, she completed to overthrow Nemu and her follower and then to violently torture Nemu in order to reach "paradise".
During the truth ending, it is sayed that Rinne is less and less human because she is used as a kind of generator to create the dream that lead to an euphoria state. However, it is hinted that she accept her awful fate.
It is revealed that Keisuke is Rinne's father and also that Rinne had to replace the "sleeping beauty", unfortunely she born with undetermined sex, after some experimentation she earns female sex attribute that will lead to the abandonment of her mother, to complete the prophecy her mother belives in, she had to be a boy. She is finally used as an emergency generator because she is not strong enough to fully replace the "sleeping beauty". However, the fact that alwys be connected to the "paradise" made her mad.