Osage-chan is a character who appears in the music videos of the Japanese musician and producer Inabakumori. She is an original character created by the artist Nukunuku Nigirimeshi, who is responsible for producing the music videos for Inabakumori's songs. Osage-chan is known for her distinctive appearance, which includes black hair, a hoodie, and a depressed expression. She appears in many of Inabakumori's music videos, including "Lag Train" and "Rainy Boots". The character has become popular among Inabakumori fans, and there have been various Osage-chan merchandise created, such as plush toys and player models for games like Garry's Mod.