Saihate no tomodachi is a Manga/Manhwa/Manhua in (English/Raw) language, DRAMA series, english chapters have been translated and you can read them here. You are reading chapters on ManhwaZ fastest updating comic site. The Summary is
Asahi, a shy girl who is being bullied at school, goes to the ghost girl Kiyo and a female teacher who wait in the abandoned school building every day after school. The straight distortion of the girls sheds a small light at night. There is nothing scary. If you are near and far.