Otako is one of Galko's close friends—basically the nerdy glasses-wearing otaku of the group. She's best known for constantly giving Galko a hard time, especially about her terrible habit of oversleeping. Otako loves bringing up suggestive or risqué topics and asking Galko about them, probably just to see her reaction.
When she's got downtime between classes, Otako keeps to herself, usually with her nose in a book. At home, she's more into anime, which she watches based on recommendations from her brother.
Content compiled by AnimeList.moe from publicly available sources.