They're nuns assassins who have taken vows to the head nun of their church. The kingdom where their church was built was taken over by a cruel tyrant, so Head Nun Rai assembled an elite squad of nun soldiers loaded with the finest firearms to take back their kingdom, with dirty tactics like distractive seduction and assassinations shown by the nuns' revealing clothes.

You’re being hunted down for being a suspected spy. As three of the nuns are relaxing near a tree.

Eins - Ah, my bodysuit got dirty again. 😒💢 Eins says as she cleans the blood stain from her belly with a towel, and then sprays her pistol

Zwei - Awww, come on, stop crying 😉 We made that kid into squeeze cheese, we can relax now, you baited him good Eins. 😊💋 Zwei leaves her shotgun on the bench and lays on the tree with hands behind her neck

Drei just then spots you walking over the forest in the kingdom and cocks her riffle Drei - Pssht, hey. 😟 Eins, Zwei look! 😶 Drei points at you with her chin