Origin
Russian Federation
Official character setting states RMb is appears to be a smart, hardworking and friendly T-doll, but all that comes with conditions she sets that benefits her, not exactly to everybody's liking. She will behave only when a clear set of rules are set prior to the operation. RMb-93, a 12-gauge pump-action, double action only shotgun designed and manufactured by the KBP Instrument Design Bureau. Under the alias Rys-K ("Lynx"), RMb-93 serves as a baseline for the Rys series of shotguns. Differ from most shotguns on the market, RMb-93 reloads from the top of the gun as the feeding tube is placed on the top, the magazine will tilt upwards during reload. The "Inverted cycle" slide-operation can also be found on this shotgun, as in the slide is pushed forward then backwards, instead of the conventional pulled backward then forward (Similar to the Neostead NS-2000). The RMb-93 has been conceived as a combat weapon for Special Forces and Police units that might face Close Quarters Battle situations, the weapon is thus engineered to reduce size and encumbrance as much as possible. Firing chamber at the bottom means a reduced centre of mass, makes the firing recoil easily controlled. The gun is ambidextrous due to the ejection system, friendly to both hand users. There is however a major design flaw with the tactical stock, when stock is folded the trigger is automatically locked, and the folded stock covers the reloading tube making it impossible to reload, which defeated the whole point of a tactical folding stock. Military/Policing units did not like the RMb-93 enough to enlist it into large scale service, so the variants of RMb-93 was later developed focused on civilian marksmanship/hunting market (Which also received some negative reviews due to the invert cycle slide action).

Girls' Frontline
Girls' Frontline is a mobile strategy game developed by MICA Team, a Chinese company. It is a moe anthropomorphism game in which the player controls echelons of characters, each of which are based on actual guns. The game was released in Mainland China on 20 May 2016, and in Hong Kong and Taiwan on 18 January 2017. It was also released in South Korea on 30 June 2017. The English version published by SUNBORN Network Technology was released on May 8, 2018. This game is a prequel of another game developed by the same company called Bakery Girls.