Tsubame Narumi (鳴海 ツバメ Narumi Tsubame) is girl who joined Eagle Jump as an intern programmer during the story's second year. She currently lives with Momiji.
She has black hair and yellow eyes. She ties her hair to the right with a strand on her left. She wears a white shirt with purple stripes.
She is laid-back, outgoing, and caring person. However, she looks down on people that got their job through connections instead of experience and skills. This is seen when she treats Nene coldly, as Tsubame assumed she received her job through her connections with Umiko.
Momiji describes her as a dependable older sister; being able to clean laundry, cook meals and do the majority of their chores.
She grew up in Hokkaido and went to the same school as Momiji. She has been studying programming since middle school. It is revealed that her parents were against her entering the gaming industry, as they wanted her to take over their inn. After much effort, Tsubame manages to convince them to let her attend a vocational school. However, she is not sent any money, so she has to work part time jobs to pay her living expenses, in addition to going to school and working.
- Although she officially appears in Volume 6 of the manga, there is a glimpse of her on Volume 4 Chapter 51.