Yuki is a dream entity created by Randal(the dreams are not hers), she is inspired by a generic anime character who loves the protagonist but in a distorted way, becoming a yandere mixed with kuudere.she uses Japanese honorifics and the chances of finding her are extremely low and she is not real and very rare smiles(almost never), she also likes Randal (since she is part his dream) and a little of the other entities(but she loves Satoru in a distorted way)