Futaba Igarashi

Futaba Igarashi is the main protagonist in My Senpai is Annoying. She is a junior employee who thinks that her workplace senpai Harumi Takeda is annoying, but she slowly develops feelings for him which she feels conflicted about. Igarashi is a short adult woman of a relatively slender build who is often confused for a child with shoulder-length green hair that she usually ties in a ponytail and forest-green eyes. She wears a suit in the office and she often wears a red muffler whenever the weather turns cold.

Due to her having a petite figure, Igarashi adopts a boisterous and outspoken demeanor to her coworkers and family who often treat her like a child despite knowing her actual age. She is prone to being easily flustered and is often emotional though she works to hide it from others.