The hero who lives in an apartment built in a corner of a big city while having a grand dream of “I want a maid with big breasts for myself!” However, one day, her childhood friend Nagisa, who is five years younger than her, came to her hero as a maid, so it’s hard! The hero who works hard every day as part of her education for Do-san to achieve her ambitions. In your room, in the park at night, on the street, make full use of various items, and the libido is fully open today! Nasty? transformation? Which is Nagisa’s tomorrow !?