Saihate no tomodachi is a Manga/Manhwa/Manhua in english language, DRAMA series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc 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.