Sakyu Basu is one of the many students that currently attend Akademi High School.
Sakyu has long purple hair. She wears golden, cat-like eye contacts. She also wears the default uniform unless customized by the player. She has pink eyeshadow and hot pink lipstick, along with a ring with three pink jewels. Her bust size is 1.5.
Sakyu is a Social Butterfly. She will happily pose for a picture if the player tries to take a picture of her. If she sees a corpse or witnesses a murder, she will run to the closest crowd and call the police. She cannot fight back, unless they kill Inkyu.
At 7:05 AM, Sakyu enters the school grounds. She walks to her locker at 7:10 AM and changes from her outdoor shoes to her indoor shoes. At 7:15 AM, she walks to the rooftop and gossips with Inkyu Basu. Oka Ruto stalks both sisters the entire time.
At 8:00 AM, Sakyu walks into Classroom 3-2 and sits at her desk. She starts her morning classes at 8:30 AM, and leaves to go eat lunch with her sister on the bench at 1:10 PM. She will take off her ring, which the player can steal.
Sakyu walks back to class again at 1:30 PM and finishes her afternoon classes at 3:30 PM. She then heads to her locker and changes from her indoor shoes to her outdoor shoes, then she lingers there until 3:50 PM, when she walks home. In the future, every day, Inkyu will ask her older sister a question, and Sakyu will respond with an answer. They will also comment on deaths, disappearances, atmosphere, school rules, and some lore. If Inkyu was ever killed, she will mourn her sister's death instead of gossiping on the rooftop.
Inkyu is Sakyu's younger twin sister. They enjoy spending time together. Inkyu asks Sakyu questions about the lore of Akademi High and about any recent news.
As they are very close, if the player kills Inkyu in front of Sakyu, she will attack the player with much more force than she's usually capable of. If her sister disappears or is murdered, Sakyu will mourn her on the rooftop.
Sakyu and Inkyu are stalked everyday by Oka, in a search for evidence that they are supernatural beings: Sakyu, a succubus, and Inkyu, a vampire.