Higurashi no Naku Koro ni Rei

Synopsis

Rika becomes torn between remaining in this new world that knows no sin and where everyone is living contently, or killing her mother and returning to her old world. She learns that she does not have much time to act. Rika decides to fight for what she wants to live for. The next thing she knows, she awakens from a coma in her old world and happily reunites with her friends, the other world having apparently been a dream. Rika concludes she must have killed her mother to regain consciousness. Unbeknownst to her, the dream was developed by Hanyuu to teach Rika that people need to work past personal hardships in order to make life worth living.

(Source: Wikipedia)