The Rinne's Dream, also known as A Dream of Aiko series, or simply known as Rinne's story was the series of four mainline canon episode of Galaxy of Peace and Chaos including with God of The Gamalatica, Rinne Somnium, Memory of Kagami and A Dream of Aiko. A Dream of Aiko series is following by A Dream of Aiko and Rinne series.
The majority story are taking place in year between G.C. 6508 to 6517 with exception of God of The Gamalatica being take place in year G.C. 4410.