Timeline

This is a chronological timeline of the events in the series.

Undetermined

 * Azalea Magentarain is presented to a member of the Magentarain family by the Bloodline Preservation Committee. She's given Fractal Leskins, the member's vessel as her own vessel.
 * Toy Dream Company revives Detroit as Toy Dream 1, their first International Revived City.

1999

 * The Third Summoning Ceremony is discovered.

Ten Years Ago

 * Azalea Magentarain makes her high society debut in the Princess Azalea.

Between Six and Five Years Ago

 * The Fifteen Siblings Project takes place between September 16 and November 11.
 * Due to Kyousuke Shiroyama's actions, a coalition of summoners is forced to wage a Secret War against the White Queen where Materials briefly overflowed into the human world and mankind nearly went extinct. Many summoners and vessels died during this war, and their original plan to deal with the White Queen failed, but eventually the summoners managed to use hundreds of Unexplored-classes and somehow settled the fight with a saturation attack, saving the worlds of man and Material alike.
 * Shouko Umie is murdered by a man who had undergone genetic tuning in late October. (Original version of the events).
 * Reiji Yasuzumi commits suicide.

Six Months Ago

 * Kyousuke Shiroyama separates from Olivia Highland, his vessel.

One Month Ago

 * The city of Harukawa officially admits to economic collapse.

Undetermined Year, April

 * The events of Mitou Shoukan://Blood Sign Volume 01 take place in mid-April, between the 14th and the 16th.
 * Toy Dream Company announces their intentions to support the city of Harukawa as Toy Dream 40.
 * The events of Mitou Shoukan://Blood Sign Volume 02 start on April 29.

Undetermined Year, May

 * The events of Mitou Shoukan://Blood Sign Volume 02 end on May 1.
 * The events of Mitou Shoukan://Blood Sign Volume 03 take place between the 20th and the 24th.
 * The events of Mitou Shoukan://Blood Sign Volume 04 start on May 31.

Undetermined Year, June

 * The events of Mitou Shoukan://Blood Sign Volume 04 end on June 3.
 * The events of Mitou Shoukan://Blood Sign Volume 05 happen on June 13.

Undetermined Year, July

 * The events of Mitou Shoukan://Blood Sign Volume 06 happen between the 5th and the 9th.
 * The events of Mitou Shoukan://Blood Sign Volume 07 happen between the 19th and the 21st.