Arashiyama Squad 3

Short summary
''Usami explains the triggers for gunners to Yūma and Osamu. Meanwhile Arashiyama Unit fight with Miwa, Izumi, and Tōma.''

Long summary
Tsukimi informs Miwa that Utagawa has bailed out and Tachikawa is badly injured. This frustrates Miwa and Izumi, but excites Arashiyama and Tokieda.

At Tamakoma, Usami continues her explanation of Border Triggers to Osamu and Yūma. She introduces Triggers for Gunner; Asteroid, Meteor, Viper, and Hound. Meanwhile, Miwa hits Arashiyama with Lead Bullets, and the two face off. As Izumi fires, Arashiyama teleports in behind him and fires in a synchronized attack with Tokieda. Thanks to Miwa's warning, Izumi barely manages to avoid getting hit in the head or heart.

Elsewhere, Kitora fights with Yoneya inside a building, moving from room to room which forces Yoneya to shorten his spear. As they enter another room, Kitora stops and Yoneya move for an attack. However, his arm is caught by Spider, and Kitora runs him through the heart. Before his Trion runs out, Yoneya throws himself and Kitora out of the building, where Izumi is waiting to shoot. However, Tokieda moves in the way to shield Kitora, but is shot in the head by Tōma. Tokieda then pulls Kitora away before Tōma fires another shot at her and lands a hit at Kitora's left leg intead. After their Trion run out, both Mitsuru and Yoneya bail out. Kitora apologizes to Arashiyama for not being thorough enough.

Characters in order of appearance

 * Osamu Mikumo
 * Yūma Kuga
 * Shiori Usami
 * Isami Tōma
 * Jun Arashiyama
 * Mitsuru Tokieda
 * Ai Kitora
 * Shūji Miwa
 * Yōsuke Yoneya
 * Kōhei Izumi