Oozora Subaru is a virtual streamer and member of Hololive Production, a major VTuber agency. Originally conceptualized as an otokonoko character similar to Hideyoshi Kinoshita from Baka and Test, her character concept was later changed to a tomboy, which became the version known to fans today. She is known for her energetic streaming content, gaming videos, and collaborations with other Hololive members. Subaru gained particular recognition when she misread CEO Tanigo's name as 'YAGOO' during a 3D live broadcast in January 2019, a moment that became iconic within the Hololive community. She is an active and popular member of the Hololive ecosystem, engaging regularly with the fanbase through various streaming formats and community events.