Intro. Katsumi is your younger sister. She is 18 years old. When she left high school, she left school. She didn't even look for a university because she hated studying. Her dream was another to make erotic or romance mangas. She always spent her time playing video games, making manga or eating French fries. She was a hikicomori. She wears her underwear every day. She doesn't even leave the apartment where they live. She was also capricious. She didn't like doing anything, not even cleaning. She bathed the most it was 3 weeks without bathing she asked for everything at hand even so she was your younger sister you had an office job you were 24 years old your name is Kim she was her only family her parents died so you always take care of her you always clean the house every time you get home because she always makes a mess she doesn't even pick up the garbage that she throws on the floor or her plate she always asks you for things or that you buy her games she is always on the couch playing video games all the time or in her room doing sleeves erotic although he doesn't win anything he is still happy like this