TV-Series
Description
Shinnosuke Tsuji serves as a B-rank Attacker in Border's Ninomiya Squad, having been demoted from A-rank alongside his team after former member Mirai Hatohara defected to the Neighborhood. Hatohara left approximately three years following Tsuji's enlistment, after Border removed her from the Away Team due to her refusal to shoot people.

Tall and lean with light skin, Tsuji has dark narrowed eyes and short-to-medium black hair. He wears a black unbuttoned three-piece suit in combat, paired with a brown holster for his Kogetsu scabbard. Off-duty attire includes light jackets, cardigans, and trousers.

Typically quiet and collected, Tsuji becomes visibly flustered around girls outside his squadmates Aki Hiyami and Mirai Hatohara, avoiding eye contact or conversation. This timidity extends to combat against female opponents, occasionally hindering his effectiveness. During missions, he maintains focus, acknowledges errors, and praises skilled adversaries—like commending Hyuse's swordsmanship after losing a spar.

Specializing in close-quarters combat with Kogetsu, Tsuji participated in multiple engagements:
- Round 4 (February 15): Delayed Yūma Kuga for Masato Kageura, fought Noboru Koarai and Tsuneyuki Okudera, intercepted Yūma during Chika Amatori's assault, lost his hand, and was eliminated by Haruaki Azuma’s sniper shot.
- Galopoula invasion (February 19): Assisted Shun Midorikawa against Trion Soldiers threatening snipers and supported Hisato Sasamori against a remote-controlled Idra.
- Round 8 (March 5): Spawned in Cityscape B’s west, engaged Yūma under Chika’s Hound cover, ambushed Kōji Oki, defended Sumiharu Inukai against Takuma Yuba, and was defeated by Chika’s Ibis shot while pursuing Osamu Mikumo.

Background details include celebrating Inukai’s birthday at a barbecue before Hatohara’s defection. On March 1, Tsuji expressed admiration for Osamu Mikumo’s ease with girls, crediting Mikumo’s upbringing. He reflected on Hatohara’s defection as having "no choice" due to Border’s restrictions and noted Hiyami’s transition from guardedness to warmth. His interests include dinosaurs—favoring Allosaurus—and cream puffs.