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Border Saga[]

Introduction Arc[]

Introduction Arc
Yūma Kuga transfers to Mikado City's third middle school, where he meets Osamu Mikumo. Yūma learns of Border and the Neighbor invasions, and reveals that he himself is a Neighbor.
Manga Anime
Number of Chapters 16 Number of Episodes 8

Black Trigger Capture Arc[]

Black Trigger Capture Arc
Yūma's identity as a Neighbor is outed to Border, who sends their best Squads to assassinate him and take his Black Trigger. However, he was recruited into Tamakoma Branch by Yūichi Jin, who joins forces with Arashiyama Squad to protect his new junior.
Manga Anime
Number of Chapters 16 Number of Episodes 8

Border Enlistment Arc[]

Border Enlistment Arc
On Border's Official Enlistment Day, Yūma and Chika Amatori finally make their debuts, while Osamu battles Sōya Kazama, calling attention to their group. Later, Osamu and Yūma battle Shun Midorikawa, and are afterwards called to a meeting regarding an upcoming invasion.
Manga Anime
Number of Chapters 11 Number of Episodes 5

Large-Scale Invasion Arc[]

Large-Scale Invasion Arc
A group of humanoid Neighbors, later identified as being from Aftokrator, invade Mikado City in search of Trigger users. Based on Jin's predictions, Border fights to protect civilians and C-rank trainees.
Manga Anime
Number of Chapters 42 Number of Episodes 16

B-Rank Wars Arc[]

B-Rank Wars Arc
After the invasion, Yūma and Chika officially become B-rank agents, and form Tamakoma Second with Osamu as captain and Shiori Usami as operator. The squad joins the rank battles in order to become one of the top two B-rank teams and qualify for the Expedition Force.
Manga Anime
Number of Chapters 34 Number of Episodes 21

Galopoula's Invasion[]

Galopoula's Invasion
Meanwhile, Border's A-rank Squads and free B-rank Squads thwart an expedition from Galopoula and Rhodokhroun to destroy Border's Expedition Ship. Out of necessity for the team, Hyuse is slated to join Tamakoma Second.
Manga Anime
Number of Chapters 16 Number of Episodes 5

B-Rank Wars Arc - Part II[]

B-Rank Wars Arc
Tamakoma Second continues to fight in the rank wars in order to become one of the top two B-rank teams and join the Away Team.
Manga Anime
Number of Chapters 63 Number of Episodes ??

Away Mission Test Arc[]

Away Mission Test Arc
Manga Anime
Number of Chapters Number of Episodes

Anime-Exclusive[]

Fugitive Arc[]

Anime/Fugitive Arc
Tamakoma Second attend the training camp in Shizuka City. They meet Xeno, a genius Trion Soldier engineer, along with Lilith, a Trion Soldier, who are fleeing their planet Ergates. Gieve and Charon chase them in order to retrieve Lilith and prevent information on Trion Soldier technology from getting leaked. Xeno and Lilith cooperate with Tamakoma Second to stave off their pursuers while awaiting an opportunity to leave Earth.
Manga Anime
Number of Chapters N/A Number of Episodes 15
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