Pre-Series Timeline

43 years ago

 * Masamune Kido is born.

40 years ago

 * Raymond is born.

34 years ago

 * Katsumi Karasawa is born.

25 years ago

 * Haruaki Azuma is born.

22 years ago



 * Reiji Kizaki is born.


 * Sōya Kazama is born.

21 years ago

 * Rinji Amatori is born.
 * Kei Tachikawa is born.
 * Kōtarō Suwa is born.

20 years ago

 * Yūichi Jin is born.
 * Jun Arashiyama is born.
 * Daichi Tsutsumi is born.

19 years ago

 * Isami Tōma is born.
 * Tatsuya Kuruma is born.


 * Kōhei Izumi is born.
 * Izukacha is born.
 * Kō Murakami is born.


 * Shiori Usami is born.


 * Haruka Ayatsuji is born.


 * Kirie Konami is born.


 * Tōru Narasaka is born.


 * Shūji Miwa is born.


 * Yōsuke Yoneya is born.

17 years ago

 * Shirō Kikuchihara is born.
 * Ryō Utagawa is born.
 * Mitsuru Tokieda is born.
 * Taichi Betsuyaku is born.


 * Kyōsuke Karasuma is born.


 * Ken Satori is born.


 * Shōhei Kodera is born.

16 years ago

 * Yūma Kuga is born.
 * Hisato Sasamori is born.
 * Tsukihiko Amō is born.
 * Osamu Mikumo is born.
 * Osamu Mikumo is born.


 * Ai Kitora is born.

14 years ago

 * Shun Midorikawa is born.
 * Izuho Natsume is born.


 * Chika Amatori is born.

12 years ago

 * Vittarno is born.

10 years ago

 * Yūgo Kuga teaches Yūma "The 3 Teachings".

9 years ago

 * Jin joins Border.

6 years ago

 * Sōichi Mogami dies, using remaining Trion creates a Black Trigger


 * Neighbors attack Mikado City, killing many people, and Border agents defend against them.(see Neighbor Attack for more details.)


 * Yōtarō Rindō is born.

5 years ago

 * Neighbors get into an internal conflict.
 * Yūgo Kuga dies while saving Yūma.

1 year ago
December
 * Midorikawa joins Border.
 * Chika's friend is kidnapped by a Neighbor.

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January