Maori Hosoi/Plot

Background
Hosoi hails from Hyōgo. Growing up, she was rarely complimented by her family, as she was overshadowed by her brilliant older brothers. She was eventually scouted by Border and became the Operator of Ikoma Unit. At one point, she stopped decorating the strategy room with flowers because her teammates' praise made her uncomfortable.

Introduction Arc
Ikoma Unit presumably takes part in the extermination of all Rads in Mikado City.

Large-Scale Invasion Arc
Ikoma Unit is seemingly not deployed during the Second Large-Scale Invasion, and could therefore be among the B-rank units with missing members which Masafumi Shinoda prevents from fighting against Aftokrator's forces out of fear of capture.

Round Two
On February 5, Ikoma Unit faces off against Ninomiya Unit in the second round of rank battles. Since Azuma Unit, Katori Unit, Ōji Unit and Yuba Unit compete in a four-way match in the day division, it can be inferred that the three-way battle takes place in the night division and that Kageura Unit is the third participant.

Round Four
Since Tamakoma Second fights Ninomiya Unit, Kageura Unit and Azuma Unit in the night division of rank battles on February 15, and since Katori Unit and all other possible opponents were in the middle tier of B-rank or lower, Ikoma Unit must have fought in the day division against Ōji Unit and Yuba Unit. After the scores from both divisions are tallied, Ikoma Unit remains in third place.

Galopoula's Blitz
Since Azuma Unit, Kageura Unit and Yuba Unit fight in the night division of rank battles on February 19, Ikoma Unit must have competed in the day division against Ninomiya Unit, Ōji Unit and Suzunari First. They rank third at the end of the match. That same night, Ōji Unit and Ikoma Unit are deployed to intercept opponents west and south of the base in preparation of Galopoula's incursion.

Round Five (Night)
After the results of both the day and night divisions are tallied in round five, Ikoma Unit ranks third, with 27 points.

Round Six
Ikoma Unit is pitted against Ōji Unit and Tamakoma Second in round six. On the day of the match, the team members are gathered in the strategy room, discussing Tamakoma Second's prowess. Hosoi insists that front-liners stay on their toes, to which Kai Minamisawa responds that he will take on Yūma Kuga by himself, to her frustration. When Satoshi Mizukami observes that Tatsuhito Ikoma says that all girls are cute, Hosoi thinks that he hs never told her so, which Kōji Oki divines from her expression. A round of compliments ensues which flusters the Operator. The conversation moves to the menu of the cafeteria until the start of the match, which takes place in Cityscape A. She immediately warns Oki about an enemy closing in on his location. Minamisawa soon clashes with Yutaka Kashio, whose allies rapidly close in. Hosoi warns him to disengage, but he ignores her and is forced to bail out. She chides him when he apologizes. After Chika Amatori opens fire, Hosoi sends her exact coordinates to Oki, with Ikoma asking her to do so a moment later and flustering her by calling her cute. The match terminates with Ikoma Unit and Ōji Unit scoring three points against Tamakoma Second's four. Hosoi regards Ikoma with exasperation when he asks if the last point does not count for three. After the results from both the day and night division are tallied, Ikoma Unit remains in third place with a point total of 34.

Round Seven
Since Tamakoma Second faces off against Kageura Unit, Azuma Unit and Suzunari First in the day division of rank battles on March 1, it can be inferred that Ikoma Unit competes against Ōji Unit and Ninomiya Unit in the night division. After the results of both the day and night divisions are tallied, Ikoma Unit ranks fourth.

Round Eight
On March 5, Ikoma Unit is pitted against Ninomiya Unit, Tamakoma Second and Yuba Unit in the night division of rank battles. The fighters are as relaxed as ever, listening to Ikoma's rambling stories. Hosoi asks them if they should not be talking about something else, which the captain takes as an invitation to share another pointless anecdote. She suggests that Oki target Chika, since they have no strategy against her Meteor. Once the match begins, she tells Minamisawa not to dive into the fray by himself, his nonchalance disquieting her. As the entire unit gangs up on Hyuse, she warns them to watch out for fire from the south and the west, where the remaining opponents are. Eventually, all her teammates bail out. The match terminates some time later with Ikoma Unit and Yuba Unit tied in third place, having scored two points each. During the final commentary, Hosoi agrees with Mizukami's explanation of how Hyuse was able to avoid Ikoma's first Senkū. The season of rank battles ends with Ikoma Unit ranking fourth, with a total of 34 points.