Umiko Ahagon

Umiko is the chief of the programming team at Eaglejump. She is extremely strict when it comes to her work and doesn't hesitate to scold other employees when she sees them slacking on the job. Although she can seem rather harsh and intimidating at times, she does have a soft side. Umiko is actually really nice and will usually feel down about herself if she feels as though she has scared someone into hating her, such as Suzukaze Aoba. Whenever Umiko gets friendly, however, she'll tend to get carried away in talking about her hobbies, which can make people feel uncomfortable at times. Umiko happens to be a huge military fan and appears to be quite knowledgeable on things like guns and just about anything pertaining to military equipment. When she's not at work programming, she enjoys playing airsoft - a hobby that she likes to converse with Aoba about (even though she expresses little interest). In her office, she also has an extensive collection of rifles that line the walls, all of which are not real. For reasons unknown, Umiko hates it when people call her by her last name, Ahagon. She is known to have quite a short temper, but when people call her "Ahagon," that's usually enough to really irritate her - or shoot them with an airsoft pistol. (Source: Wikia)