is cosplaying asfromis Kyōsuke's 14-year-old younger sister. She is mature for her age with a cold, tsundere-like personality. She has a strong "little sister" fetish and owns many adult games with older brother/little sister themes, which she got a job modeling to pay for. Despite this, she states she does not know why she started liking it, though it is suggested that she has a brother complex (i.e. she is in love with Kyōsuke) and is using the games as a surrogate to this. She often denies such feelings and believes the 2D and 3D worlds should be kept separate. Nevertheless, she is shown to be very frustrated when he is with, or shows interest, in other girls such as Manami who she accuses as being "all over" Kyōsuke. Likewise she frequently forces Kyōsuke to spend time with her, whether it is playing games or taking her somewhere though frequently denies that she wants him with her. She uses the screen name Kiririn when with her otaku friends.